MIT researcher finds neuron growth in adult brain
First we thought you never got new brain cells as an adult - then in 1998 that was proven false, and now this.
As much as we think we know - the reality is that we don't know squat. But we're getting more knowledge all the time, so maybe someday it will all begin to fit together.
Tuesday, December 27, 2005
You've got to be kidding me...
Researchers investigate the case of the disappearing teaspoons
This has nothing to do with brain research - except that some people's brains were clearly bored and needed something to do.
This has nothing to do with brain research - except that some people's brains were clearly bored and needed something to do.
Neuronal baby-steps
New neurons take baby steps in the adult brain
Dropping in Stem-cells or other new cells into an area and just letting them go to work doesn't....well...work. It isn't that easy, you have to know how to make them turn into the cells you want, then you have to convince them to act like the other cells, and interact with them.
All-in-all - a complicated and very unstable process. However, this is definitely good news.
Dropping in Stem-cells or other new cells into an area and just letting them go to work doesn't....well...work. It isn't that easy, you have to know how to make them turn into the cells you want, then you have to convince them to act like the other cells, and interact with them.
All-in-all - a complicated and very unstable process. However, this is definitely good news.
Bigger is better...
Bigger brain size matters for intellectual ability
I seem to remember a number of studies where they concluded that brain size and intelligence didn't matter. This most recent study contradicts the older assumptions.
I'll be interested to see if this gets replicated by other studies in the near future.
I seem to remember a number of studies where they concluded that brain size and intelligence didn't matter. This most recent study contradicts the older assumptions.
I'll be interested to see if this gets replicated by other studies in the near future.
Friday, December 16, 2005
Leap-Frog anyone?
Does baby 'get' tech?
The conclusion of current research? We don't know. There is no evidence that electronic media (games, videos, etc.) actually enhances, or even assists in baby brain development.
They stay that actual time with your baby without tech is still the best.
Those of us with kids roll our eyes and say "Duh!"
The conclusion of current research? We don't know. There is no evidence that electronic media (games, videos, etc.) actually enhances, or even assists in baby brain development.
They stay that actual time with your baby without tech is still the best.
Those of us with kids roll our eyes and say "Duh!"
Thursday, December 01, 2005
Alzheimer's is a new form of Diabetes?
Alzheimer's: A New Form of Diabetes?
Now, I'm no expert on Alzheimer's, but it seems to me that this could potentially be an incredible breakthrough. If it is indeed a form of diabetes that could provide some clues as to how it could be treated.
Let's stay hopeful that this is a positive development.
Now, I'm no expert on Alzheimer's, but it seems to me that this could potentially be an incredible breakthrough. If it is indeed a form of diabetes that could provide some clues as to how it could be treated.
Let's stay hopeful that this is a positive development.
Wednesday, November 30, 2005
What to ignore
Discovery disproves simple concept of memory as 'storage space'
Apparently better memory may not be about storage volume, but more about being able to have the ability to filter out useless information and pick out only the things that are worth transferring to awareness.
In other words: smart people are better at ignoring things.
Apparently better memory may not be about storage volume, but more about being able to have the ability to filter out useless information and pick out only the things that are worth transferring to awareness.
In other words: smart people are better at ignoring things.
You see Tomato...I see....Tomato
Everyone’s eyes are wired differently
And yet, despite actual physical differences in how our eyes are wired, we perceive color pretty much the same. I posted about this previously, and this only enhances my prior questions - is our perception of color a neurological, physical, or cultural thing?
Nature, nurture...blah, blah, blah....
And yet, despite actual physical differences in how our eyes are wired, we perceive color pretty much the same. I posted about this previously, and this only enhances my prior questions - is our perception of color a neurological, physical, or cultural thing?
Nature, nurture...blah, blah, blah....
And this is your brain on Hypnosis....
» Watching the brain under hypnosis
Basically, the brain shows direct evidence of perception of things that are not there. Personally, I'd like to see this linked to false memories as well.
So, now we have images of our brains under stress, and under hypnosis. We also have fMRIs of brains under the influence of various drugs and alcohol including addicted brains. We have images of brains under various types of psychological disorders (depression, schizophrenia, autism, etc.).
So, what's left?
Maybe a brain image of somone in love, under the influence of metaphysical effects...the list is probably pretty endless, and there are likely images of stuff I don't know about.
Ain't medical technology fun?
Basically, the brain shows direct evidence of perception of things that are not there. Personally, I'd like to see this linked to false memories as well.
So, now we have images of our brains under stress, and under hypnosis. We also have fMRIs of brains under the influence of various drugs and alcohol including addicted brains. We have images of brains under various types of psychological disorders (depression, schizophrenia, autism, etc.).
So, what's left?
Maybe a brain image of somone in love, under the influence of metaphysical effects...the list is probably pretty endless, and there are likely images of stuff I don't know about.
Ain't medical technology fun?
This is your brain on Stress...
UPHS News: Penn Research Permits First-Ever Visualization of Psychological Stress in the Human Brain
We have lots of studies on the effects of stress on cognitive performance (e.g.: Yerks-Dotson) - but actually getting an IRB passed through that allows us to put a subject under psychological stress and then look at their brains through an fMRI is definitely a good thing.
I wonder what that proposal looked like:
Q: What are the potential harmful effects to the participants?
A: Um...well...stress, for one....
We have lots of studies on the effects of stress on cognitive performance (e.g.: Yerks-Dotson) - but actually getting an IRB passed through that allows us to put a subject under psychological stress and then look at their brains through an fMRI is definitely a good thing.
I wonder what that proposal looked like:
Q: What are the potential harmful effects to the participants?
A: Um...well...stress, for one....
Gaming the future
Researchers use brain scans to predict behavior
The upshot of the article is that fMRI scans seem to show when a brain is planning ahead and anticipating moves in a game.
So, we have identified a future perspective cognitive process in the brain as it relates to a specific type of game.
The upshot of the article is that fMRI scans seem to show when a brain is planning ahead and anticipating moves in a game.
So, we have identified a future perspective cognitive process in the brain as it relates to a specific type of game.
The Zen of Brain development
Meditation associated with structural changes in brain
Studies have shown that mediation can produce alterations in brain activity, and meditation practitioners have described changes in mental function that last long after actual meditation ceases, implying long-term effects. However, those studies usually examined Buddhist monks who practiced mediation as a central focus of their lives.
Studies also found that, in an area associated with the integration of emotional and cognitive processes, differences in cortical thickness were more pronounced in older participants, suggesting that meditation could reduce the thinning of the cortex that typically occurs with aging.
Studies have shown that mediation can produce alterations in brain activity, and meditation practitioners have described changes in mental function that last long after actual meditation ceases, implying long-term effects. However, those studies usually examined Buddhist monks who practiced mediation as a central focus of their lives.
Studies also found that, in an area associated with the integration of emotional and cognitive processes, differences in cortical thickness were more pronounced in older participants, suggesting that meditation could reduce the thinning of the cortex that typically occurs with aging.
Saturday, November 26, 2005
Tuesday, November 08, 2005
Gaming education
Games turn geography into child’s play
This is a personal project of mine, and one that I think has a LOT of room for growth. Games are not incorporated into education nearly enough.
And don't even get me started on using gaming technology.
This is a personal project of mine, and one that I think has a LOT of room for growth. Games are not incorporated into education nearly enough.
And don't even get me started on using gaming technology.
Wednesday, October 26, 2005
Young or old - we can all be distracted
Changes in brain, not age, determine one's ability to focus on task
"We found that both performance and brain-activation differences of older good performers and the older poor performers are predicted by changes in brain structure, specifically by the volume of white matter connecting the right and left hemispheres of the frontal lobes,"
So - regardless of age, focus is a matter of how your brain is built.
[Mr. Miyagi]Focus Daniel-San![/Mr. Miyagi]
"We found that both performance and brain-activation differences of older good performers and the older poor performers are predicted by changes in brain structure, specifically by the volume of white matter connecting the right and left hemispheres of the frontal lobes,"
So - regardless of age, focus is a matter of how your brain is built.
[Mr. Miyagi]Focus Daniel-San![/Mr. Miyagi]
Atlas of brain unfolds
New online atlas provides collective maps of human brain folds
While obviously not a "map" as such, seeing as each individual brain's folds are akin to fingerprints in thier uniqueness, but still, a pretty cool. The "map" images are based on averages so there is still a significant amount of data that could be derived from the images.
While obviously not a "map" as such, seeing as each individual brain's folds are akin to fingerprints in thier uniqueness, but still, a pretty cool. The "map" images are based on averages so there is still a significant amount of data that could be derived from the images.
Blue...no, Yellow!
Color perception is not in the eye of the beholder: It's in the brain
"Researchers at the University of Rochester have found that the number of color-sensitive cones in the human retina differs dramatically among people--by up to 40 times--yet people appear to perceive colors the same way"
This is pretty cool. It brings to mind a study I read and can't find currently of a particular tribe of South American natives that only had language for 2 or 3 colors - green, not green and red. They couldn't really understand other colors like orange or variations of shades of green.
Perhaps the colors we percieve and how we percieve them are related to nurture rather than nature - to find that out would prove to be very interesting indeed.
"Researchers at the University of Rochester have found that the number of color-sensitive cones in the human retina differs dramatically among people--by up to 40 times--yet people appear to perceive colors the same way"
This is pretty cool. It brings to mind a study I read and can't find currently of a particular tribe of South American natives that only had language for 2 or 3 colors - green, not green and red. They couldn't really understand other colors like orange or variations of shades of green.
Perhaps the colors we percieve and how we percieve them are related to nurture rather than nature - to find that out would prove to be very interesting indeed.
Friday, October 21, 2005
Sticks and stones....
But apparently the words you use CAN hurt you - at least that's the gist of this study on how labels shape our attitudes toward violence.
Politicians have known this for ages. How you name something, or how you frame it affects the perception of the idea. Think of (for a controversial example) the abortion debate. You aren't pro or anti-abortion you are "pro-life" or "pro-choice" - the words describing the two positions don't refer in any way to the actual concept they are defining.
But, it turns out that it's even deeper than that - the nouns and adjectives we use can be powerful cues to how we make sense of people's behavior.
Politicians have known this for ages. How you name something, or how you frame it affects the perception of the idea. Think of (for a controversial example) the abortion debate. You aren't pro or anti-abortion you are "pro-life" or "pro-choice" - the words describing the two positions don't refer in any way to the actual concept they are defining.
But, it turns out that it's even deeper than that - the nouns and adjectives we use can be powerful cues to how we make sense of people's behavior.
Thursday, October 20, 2005
Emotions rule....everything
Humans are governed by emotions—literally
This actually comes as a surprise to nobody. I can't think of any decisions by any government, ever, that weren't driven primarily by emotional reaction.
Seems like we're coming to a much more complete realization that emotions play a much larger role in our everyday actions than what anyone would have supposed.
This actually comes as a surprise to nobody. I can't think of any decisions by any government, ever, that weren't driven primarily by emotional reaction.
Seems like we're coming to a much more complete realization that emotions play a much larger role in our everyday actions than what anyone would have supposed.
Wednesday, October 19, 2005
Smoking makes you stupid
Well, according to this University of Michigan study: Does smoking cloud the brain? The answer seems to be, yes.
It's long term and it seems that the toxins enter the brain and hasten cognitive decline. So, if you smoke - prepare to get less intelligent more quickly as you grow older.
Of course, putting a known toxic and carcinogenic substance like tobacco smoke into your system willingly argues for a certain lack of intelligence to begin with - but that's just my opinion.
It's long term and it seems that the toxins enter the brain and hasten cognitive decline. So, if you smoke - prepare to get less intelligent more quickly as you grow older.
Of course, putting a known toxic and carcinogenic substance like tobacco smoke into your system willingly argues for a certain lack of intelligence to begin with - but that's just my opinion.
Tuesday, October 18, 2005
Mind map your computer
TheBrain Technologies Corporation provides some software that lets you organize your computer files in a "mind map" format.
Pretty cool.
Along those same lines - try the Kartoo search engine sometime - it kind of does the same thing for Internet searches.
Pretty cool.
Along those same lines - try the Kartoo search engine sometime - it kind of does the same thing for Internet searches.
Friday, October 14, 2005
One more reason to stop...
Does smoking cloud the brain?
Keeping in mind that an association does not necessarily imply that there is causality, it's still worth looking at.
Keeping in mind that an association does not necessarily imply that there is causality, it's still worth looking at.
Wednesday, October 12, 2005
Cause my brain is bigger...yea, that's the ticket...
Liars' Brains Wired Differently
Apparently they have more grey matter in thier prefrontal cortex as opposed to "normal" brains. They theorize that they use more neuronal connections to master the complexities of deciption.
Apparently they have more grey matter in thier prefrontal cortex as opposed to "normal" brains. They theorize that they use more neuronal connections to master the complexities of deciption.
Friday, September 30, 2005
I'd be interested to see this
Maths and science education gets animated and collaborative online
It's about freaking time. I look out on the web-based learning landscape and I see very little that is truly new and innovative. The main idea seems to be stuck in the mode of online Skinner Boxes.
I'm not sure what the solution should be - but the environment described in the article is pretty cool.
It's about freaking time. I look out on the web-based learning landscape and I see very little that is truly new and innovative. The main idea seems to be stuck in the mode of online Skinner Boxes.
I'm not sure what the solution should be - but the environment described in the article is pretty cool.
Because the fulcrum isn't aligned with the axis.....
Okay - sorry for the exceptionally obscure quote. I'm not even sure where it's from myself, but I remember it from my childhood in Saudi Arabia. It was a BBC made cartoon for kids, something about a kid with a ball or some such child-oriented basis. The episode revolved around a bully of some sort that was demanding that someone build a box that was actually an optical illusion, the young boy with the ball patiently explained to the ogre that the build was impossible because "the fulcrum doesn't align with the axis" - a statement that he then wen ton to explain to the clueless ogre.
All that is simply the long way of leading into this article: New book explains age-old mystery of geometrical illusions
A finding I think is pretty cool. Check out this marvelous last quote:
All that is simply the long way of leading into this article: New book explains age-old mystery of geometrical illusions
A finding I think is pretty cool. Check out this marvelous last quote:
The problem for colleagues in physiology and anatomy is that our theory runs counter to what they've been doing for the last fifty years," said Purves. "And their response has understandably been 'Well, OK, that's interesting. But how do you relate this concept of vision to physiology and this anatomy?' It's perfectly valid to say, 'You've got a nice idea and it does explain the phenomenology of what we see, but how does that relate to the neurons that we know and love?'
"The answer is, we don't know," said Purves. "That's going to be the next many years of vision research. It will mean constructing a framework that explains how neurons and the connections among them operate in service of this complex, evolved statistical process called vision.
"Some bright people will certainly do this in the next ten, twenty or thirty years," said Purves. "I don't expect to be around to see it, but inevitably that will happen. But it's going to take people who deeply understand statistics and computer models of neural systems to develop a working theory of how the properties of neurons and anatomical connections are related to the end product of vision.
Dream on...
Brain areas disconnect during deep sleep - LiveScience
Perhaps an explanation for why dreams seem so, well...dreamy?
Perhaps an explanation for why dreams seem so, well...dreamy?
Monday, September 19, 2005
Odd behavior and creativity may go hand-in-hand
Odd behavior and creativity may go hand-in-hand
A study on schizophrenia and looking for why schizotypal personalities are often thought to be so creative. Brain scans enter the picture and it's actually pretty neat.
Also, it looks like it is on a pretty cool site that I'll have to explore more later.
A study on schizophrenia and looking for why schizotypal personalities are often thought to be so creative. Brain scans enter the picture and it's actually pretty neat.
Also, it looks like it is on a pretty cool site that I'll have to explore more later.
Thursday, September 08, 2005
Research shows where brain interprets 'pitch'
Research shows where brain interprets 'pitch'
For monkeys anyway. It seems odd that this research hasn't been done already.
For monkeys anyway. It seems odd that this research hasn't been done already.
Evidence of a 'memory code'?
UCI neurobiologists uncover evidence of a 'memory code'
Looking at the text of the article you find that their findings are a bit on the macro level to really be calling their findings a "memory code" - but their findings may hint at such a thing. I mean, equating the "importance" of a tone with the amount of auditory cortex devoted to processing that tone hardly seems to point at a "memory code" in my opinion. But hey, baby steps....
Looking at the text of the article you find that their findings are a bit on the macro level to really be calling their findings a "memory code" - but their findings may hint at such a thing. I mean, equating the "importance" of a tone with the amount of auditory cortex devoted to processing that tone hardly seems to point at a "memory code" in my opinion. But hey, baby steps....
Wednesday, August 31, 2005
This seems like potentially interesting news
New techniques study the brain's chemistry, neuron by neuron
We keep saying that if we could get down to a cellular level (or even better, a molecular level) of resolution for brain imaging techniques. Maybe this is the first step toward that level of detailed obervation.
We keep saying that if we could get down to a cellular level (or even better, a molecular level) of resolution for brain imaging techniques. Maybe this is the first step toward that level of detailed obervation.
Tuesday, August 30, 2005
Exercise your neural synapses
Creating Passionate Users: Blow your own mind
This site remains one of my favorites. They typically have a business slant to thier posts, but overall they still have a great hold on practical application of cognitive theory.
This site remains one of my favorites. They typically have a business slant to thier posts, but overall they still have a great hold on practical application of cognitive theory.
Scientific Savvy In U.S.
Well, this clearly isn't good news.
For an amusing and disturbing look at this same phenomenon, check out this link.
Have you ever watched the Jay Leno bit where he walks up to people on the street and asks them very simple questions about subjects that I consider common knowledge (basic questions of U.S. history or questions about current affairs or about the city they live in), and the people he shows on TV are so clueless it's downright painful to watch.
It's amusing, and I like to think that these people are the exception and not the rule - but it looks like the percentages of clueless people is much higher than I'd like to admit.
For an amusing and disturbing look at this same phenomenon, check out this link.
Have you ever watched the Jay Leno bit where he walks up to people on the street and asks them very simple questions about subjects that I consider common knowledge (basic questions of U.S. history or questions about current affairs or about the city they live in), and the people he shows on TV are so clueless it's downright painful to watch.
It's amusing, and I like to think that these people are the exception and not the rule - but it looks like the percentages of clueless people is much higher than I'd like to admit.
Women are more complex than men
Well, in their voices anyway: ScienceDirect - NeuroImage : Male and female voices activate distinct regions in the male brain
Key quote:
Pretty cool.
Key quote:
The female voice is actually more complex than the male voice, due to differences in the size and shape of the vocal cords and larynx between women and men, and also due to women having greater natural ‘melody’ in their voices. This causes a more complex range of sound frequencies than in a male voice.
When a man hears a female voice the auditory section of his brain is activated, which analyses the different sounds in order to ‘read’ the voice and determine the auditory face.
When men hear a male voice the part of the brain that processes the information is towards the back of the brain and is colloquially known as the ‘mind’s eye’. This is the part of the brain where people compare their experiences to themselves, so the man is comparing his own voice to the new voice to determine gender.
Pretty cool.
Ignore everything on this site....
Well, maybe not everthing, but then there is this: Most published research findings may be false
Not terribly surprising when you think about it. Most publishing is really just hypothesis gathering - and much of what I report here is really on the fringe of science as far as emerging discoveries. The article probably applies even more in psychological or neurological settings as our level of understanding of basic concepts like "consciousness" or "creativity" is still vague at best.
This phenomenon is also extremely valuable to consider when looking at scientific findings or topics that are highly politically, socially or culturally charged.
Not terribly surprising when you think about it. Most publishing is really just hypothesis gathering - and much of what I report here is really on the fringe of science as far as emerging discoveries. The article probably applies even more in psychological or neurological settings as our level of understanding of basic concepts like "consciousness" or "creativity" is still vague at best.
This phenomenon is also extremely valuable to consider when looking at scientific findings or topics that are highly politically, socially or culturally charged.
Monday, August 29, 2005
What did you say there sonny?
Hearing loss in older adults may compromise cognitive resources for memory
Would this include hearing loss for younger adults for things like injury or repetitive stress?
Would this include hearing loss for younger adults for things like injury or repetitive stress?
Saturday, August 27, 2005
Let us all marvel....
...at the collosal stupidity of this British researcher's report
Now, I'll be the first to look very curiously evidence of gender difference - but using IQ measurements? Is he being serious?
Let's look at what he says:
Again, I'm all for challenging accepted wisdom if you have credible evidence on your side. But using IQ scores is NOT a credible way of providing evidence in this case. All he has shown is the females score lower on IQ tests on average. So, isn't it just a little possible that the instrument you're using might just be flawed at being able to measure "intelligence" levels between men and women? Isn't it possible that IQ tests show very little regarding an individual's intelligence outside of their ability to successfully complete an IQ test? Is that the only measure of "intelligence" that you used?
Here's for all you MENSA folks out there - and IQ test shows nothing more than your ability to take an IQ test. That's all. Certainly a form of "intelligence" but not the only or even best indicator.
I will be a very happy man if the perception of IQ tests could ever be turned on its head.
Now, I'll be the first to look very curiously evidence of gender difference - but using IQ measurements? Is he being serious?
Let's look at what he says:
Dr Irwing, a senior lecturer in organisational psychology at Manchester University, said he was uncomfortable with the findings. However, he said, the evidence was clear, despite the insistence of many academics that there were no meaningful gender differences in levels of intelligence.
"For personal reasons I would like to believe men and women are equal, and broadly that's true," he said. "But over a period of time the evidence in favour of biological factors has become stronger and stronger.
"I have been dragged in a direction that I don't particularly like, but it would be sensible if the debate was based on what we pretty much know to be the case."
Again, I'm all for challenging accepted wisdom if you have credible evidence on your side. But using IQ scores is NOT a credible way of providing evidence in this case. All he has shown is the females score lower on IQ tests on average. So, isn't it just a little possible that the instrument you're using might just be flawed at being able to measure "intelligence" levels between men and women? Isn't it possible that IQ tests show very little regarding an individual's intelligence outside of their ability to successfully complete an IQ test? Is that the only measure of "intelligence" that you used?
Here's for all you MENSA folks out there - and IQ test shows nothing more than your ability to take an IQ test. That's all. Certainly a form of "intelligence" but not the only or even best indicator.
I will be a very happy man if the perception of IQ tests could ever be turned on its head.
Friday, August 26, 2005
Monkey see.....
Chimps Show Hallmark of Human Culture, Study Finds
I would think that if you looked at this from a strictly behavioristic/operant paradigm you wouldn't see culture so much as repeated behavior.
I would think that if you looked at this from a strictly behavioristic/operant paradigm you wouldn't see culture so much as repeated behavior.
Spam in the comments
I'm getting a lot of spam comments. I'm trying to delete them as I find them, but they just keep coming. Just watch, there will be a ton of spam comments to this post warning against them.
I don't want to restrict comments to registered users, but I may have to.
I don't want to restrict comments to registered users, but I may have to.
Thursday, August 25, 2005
College students everywhere rejoice!
New drug reverses effects of sleep deprivation on brain.
Seriously - all those late night cram sessions now look a whole lot better.
Seriously - all those late night cram sessions now look a whole lot better.
If you can't speak the language....
Immigrant children misdiagnosed as language-impaired.
That is a sad, sad commentary on society. Just because you can't speak English, you must be language-impaired. How obtuse...
That is a sad, sad commentary on society. Just because you can't speak English, you must be language-impaired. How obtuse...
Meanwhile, all paranormal skeptics say "Duh!"
Not strictly brain development, but still - 'Out-of-body' experiences may come from within.
Every paranormal skeptic is now saying: Uh...yea...duh...
Astral projection has always been one of those things I've looked at with a healthy dose of skepticism.
Every paranormal skeptic is now saying: Uh...yea...duh...
Astral projection has always been one of those things I've looked at with a healthy dose of skepticism.
Flys have goals?
Someone is looking at it that way: Gap-climbing fruit flies reveal components of goal-driven behaviors.
Okay, the idea is more centered on overcoming obstacles, which I suppose could be viewed as goal-oriented, but I doubt that there flys have anything close to the complexity you would see in human behavior.
Okay, the idea is more centered on overcoming obstacles, which I suppose could be viewed as goal-oriented, but I doubt that there flys have anything close to the complexity you would see in human behavior.
Playing violent video games can heighten aggression
Well, this study (well, a review of studies actually) seems to indicate that, yes, playing violent video games can heighten aggression.
I'm still not totally sure that we're looking at causality, but the results will certainly be something you'll see soon in media coverage.
I'm still not totally sure that we're looking at causality, but the results will certainly be something you'll see soon in media coverage.
Chinese, Americans Truly See Differently
Chinese, Americans Truly See Differently
Wow - who would have thought that cultural norms would affect things like eye-tracking (which I had always heard was an evolutionary development and somewhat hard-wired).
The short version is that Westerners tend to focus on the key or focal object in an image, whereas Eastern peoples tend to look at contextual items.
Wow - who would have thought that cultural norms would affect things like eye-tracking (which I had always heard was an evolutionary development and somewhat hard-wired).
The short version is that Westerners tend to focus on the key or focal object in an image, whereas Eastern peoples tend to look at contextual items.
Tuesday, August 23, 2005
Neural Communication - do we really understand it?
This article (free registration required) indicates that neural cell communication occurs in other places besides the synaptic endings.
The scientists at the Salk Institute for Biological Sciences at UC San Diego found that nerve cells release neurotransmitters outside of synapse, a process they call "ectopic neurotransmission" (which is just fun to say - especially if you're Bill Murray).
A few years ago it was discovered that glial cells played a stronger role in communication than was previously thought, and now this - we're going to have to re-write a few textbooks once we figure out what all of it means.
The scientists at the Salk Institute for Biological Sciences at UC San Diego found that nerve cells release neurotransmitters outside of synapse, a process they call "ectopic neurotransmission" (which is just fun to say - especially if you're Bill Murray).
A few years ago it was discovered that glial cells played a stronger role in communication than was previously thought, and now this - we're going to have to re-write a few textbooks once we figure out what all of it means.
Wednesday, August 17, 2005
Alteration of brain protein regulates learning
Alteration of brain protein regulates learning
"Researchers at UT Southwestern Medical Center have identified a biochemical switch that affects how neurons fire in a part of the brain associated with learning, findings that may aid in understanding schizophrenia and Alzheimer's disease."
"Researchers at UT Southwestern Medical Center have identified a biochemical switch that affects how neurons fire in a part of the brain associated with learning, findings that may aid in understanding schizophrenia and Alzheimer's disease."
Insight into the processes of 'positive' and 'negative' learners
Insight into the processes of 'positive' and 'negative' learners
A complex enough article that it can't be summarized easily, but it looks like they have found a way to identify when somone is reacting postively or negatively to consequences from their decisions.
A complex enough article that it can't be summarized easily, but it looks like they have found a way to identify when somone is reacting postively or negatively to consequences from their decisions.
A picture may be worth a thousand words...
But it apparently does notautomatically activate a thousand words.
Imaging study shows brain maturing
Imaging study shows brain maturing
I want to see the whole series of images. The movie is pretty cool though.
I want to see the whole series of images. The movie is pretty cool though.
Tuesday, August 16, 2005
Waging a high-tech war against sinusitis
Well, it's not the brain, but it's near the brain.
I don't know about anyone else, but I'm happy to hear it.
I don't know about anyone else, but I'm happy to hear it.
Blogging About Science Blogging
Derek Lowe has some thoughts on science blogging.
I like his thinking. While this blog has previously been a clearing house for all the brain-related links that I find interesting, I hope to devote more time to it and turn it into something much more useful. Like doing what Mr. Lowe suggests and explain what I'm trying to do and why.
Not a bad idea.
I like his thinking. While this blog has previously been a clearing house for all the brain-related links that I find interesting, I hope to devote more time to it and turn it into something much more useful. Like doing what Mr. Lowe suggests and explain what I'm trying to do and why.
Not a bad idea.
Monday, August 15, 2005
Size = intelligence?
Despite intelligence measurement questions asside, this study on the correlation of the volume and location of gray matter tissue to intelligence is pretty interesting.
In an update to the study, the authors apparently found some very different structure to male and female brains.
In an update to the study, the authors apparently found some very different structure to male and female brains.
Proving a point
Students aren't terribly bright about some things.
Pressed to do well on admissions tests, students take drugs
The dangers of this should be quite self-evident.
Pressed to do well on admissions tests, students take drugs
The dangers of this should be quite self-evident.
Plug in your scalp
Electric Current To Scalp Improves Speed Of Word Recall
Hmmm...zap your brain when studying - the general student population probably would take this a little too seriously I fear....
Hmmm...zap your brain when studying - the general student population probably would take this a little too seriously I fear....
For all you coffee drinkers
Small, frequent doses of caffeine is the best strategy for staying awake.
But, be careful, because caffeine can have some undesireable side effects.
But, be careful, because caffeine can have some undesireable side effects.
Aftereffects of cognitive drugs
In the previous post about cognitive drugs, it seems you can't enhance one without making sacrifices in another - in long-term vs. short-term memory anyway.
Fetal Brain Gene Expression Patterns Differ By Sex
FuturePundit: Fetal Brain Gene Expression Patterns Differ By Sex
Very related to a previous post regarding gender development.
Very related to a previous post regarding gender development.
Brain Overgrowth During First Year of Life in Autism
UCSD Researchers Find Brain Overgrowth During First Year of Life in Autism
So, hyperactive brain development in smaller brains may be the cause of autism - very interesting.
So, hyperactive brain development in smaller brains may be the cause of autism - very interesting.
More adolescence effects
Response to new faces varies by temperament, tied to brain activity
Much related to a previous post about adolescent brain development
Much related to a previous post about adolescent brain development
Brain Gets Sex Orientation Before Genitals
FuturePundit: Brain Gets Sex Orientation Before Genitals
This is just cool, and provides some rather interesting implications toward gender differentiation.
This is just cool, and provides some rather interesting implications toward gender differentiation.
Adolescence Is Tough On The Brain
FuturePundit: Adolescence Is Tough On The Brain
It affects their ability to understand emotions, and hence the likelihood for misunderstandings goes through the roof.
It affects their ability to understand emotions, and hence the likelihood for misunderstandings goes through the roof.
Coke versus Pepsi: who cares?
Coke versus Pepsi: It's all in the head
Well, our brains care apparently, or, at least, our culturally based perception of branding. Marketing folks, take note!
Well, our brains care apparently, or, at least, our culturally based perception of branding. Marketing folks, take note!
Bandura strikes again
Human see, human do
Seems that modeling is pretty powerful as a learning tool. Which we already knew.
Seems that modeling is pretty powerful as a learning tool. Which we already knew.
Prenatal alcohol exposure and brain development
Prenatal alcohol exposure can lead to lasting changes in cognitive processing
Seems that alcohol exposure (Fetal Alcohol Syndrome) for a fetus affects brain development by slowing down processing.
Just one more reason not to drink when you're pregnant.
Seems that alcohol exposure (Fetal Alcohol Syndrome) for a fetus affects brain development by slowing down processing.
Just one more reason not to drink when you're pregnant.
Erotic images can blind you
New Scientist Breaking News - Erotic images can turn you blind
I know what you're thinking - but just read the article. It basically is saying that certain types of erotic (or even "exotic") images grab your attention more aggressively and hold it, basically creating a temporary bottleneck of sensory perception. The effect also seems to be greater for some individuals and lesser for others. Thrill seekers (extreme sports enthusiasts) for example don't seem to be affected as much.
Being able to generating that type of bottleneck for less erotic subject matter (read: public education curriculum) would seem to be a fantastic way to generate long-term learning.
I know what you're thinking - but just read the article. It basically is saying that certain types of erotic (or even "exotic") images grab your attention more aggressively and hold it, basically creating a temporary bottleneck of sensory perception. The effect also seems to be greater for some individuals and lesser for others. Thrill seekers (extreme sports enthusiasts) for example don't seem to be affected as much.
Being able to generating that type of bottleneck for less erotic subject matter (read: public education curriculum) would seem to be a fantastic way to generate long-term learning.
Symbolic thinking
Scientific American: Mindful of Symbols
A well presented article that talks about how children are able to think symbolically and the difficulities they encouter in trying to transition to that type of thinking.
A well presented article that talks about how children are able to think symbolically and the difficulities they encouter in trying to transition to that type of thinking.
In defense of common sense
In the NYTimesIn Defense of Common Sense - a shorter version of John Horgan's book The End of Science.
He makes some very interesting points regarding "brain resesearch" and psychology in general. Worth a read.
He makes some very interesting points regarding "brain resesearch" and psychology in general. Worth a read.
Friday, August 12, 2005
Sleep in - it's good for you
At least...if you're a teenager. High school start times deprive teens of sleep, affect academic performance
Violence at a young age
Apparently, some researchers think that humans are at their most violent when they are 2 yrs old.
Registration required
Registration required
Our brains aren't computers
While this may not entirely be a "duh" moment, research suggests that our minds don't process the same as computers. Computers work in packets of info, and brains seem to process continually.
The bionic man/monkey
While not technically on topic with my normal posts, I think this technology is totally cool. Apparently they've installed robotic arms on monkeys, and they work just dandy. Now, they want to do the same thing for humans.
Now, while a robotic arm might not be the newest cool thing, the fact that these arms are wired directly to the brain IS new - and that's what makes it so cool.
Now, while a robotic arm might not be the newest cool thing, the fact that these arms are wired directly to the brain IS new - and that's what makes it so cool.
Nasal spray clears Alzheimer’s brain plaques
Wow, and here I thought it only helped me breathe better when I get sick. Turns out that nasal spray can do so much more: Nasal spray clears Alzheimer’s brain plaques.
Wednesday, June 08, 2005
Computer brain
Prediction: this little project will teach us nothing except what we think we already know about the brain.
In other words - it will teach us nothing new about the brain, but might serve to teach us some interesting things that happen when you program/build computers in novel ways.
In other words - it will teach us nothing new about the brain, but might serve to teach us some interesting things that happen when you program/build computers in novel ways.
Thursday, June 02, 2005
Subliminal learning
It looks like we may have identified a neurological mechanism for it - so maybe it isn't the bunk some say it is.
Time will tell.
Time will tell.
Tuesday, May 24, 2005
APA: First Graders' Behavior Problems Linked to Caffeinated Cola
Well,duh.
Another example of research that seems so completely obvious once you see it, yet nobody did it until now.
Another example of research that seems so completely obvious once you see it, yet nobody did it until now.
Tuesday, May 10, 2005
Thursday, May 05, 2005
Rising IQ scores
If you ignore the fact that an I.Q. score is an artificial construct of intelligence, then this article is quite interesting.
I'll buy it to some extent. I have no problem with video games and I do think they have a definite positive effect on developing eye-hand coordination and can help in some types of problem solving. They are not, however, a global development tool - a good development tool for very specific areas yes, global, no.
I'll buy it to some extent. I have no problem with video games and I do think they have a definite positive effect on developing eye-hand coordination and can help in some types of problem solving. They are not, however, a global development tool - a good development tool for very specific areas yes, global, no.
Wednesday, March 16, 2005
Where the music is...
So, can they locate and remove some of the more annoying songs? Like say "Who let the dogs out"?
Wednesday, March 02, 2005
Interesting thoughts on neuroscience
Rand Simberg (normally a space guru, but also a technophile and science nerd - in the best possible meaning of the term) has some very interesting thoughts on the future of neuroscience.
His comments revolve around ethical concerns with potential future developments like therapies and enhancements.
I neither agree nor disagree with his thoughts, I merely point them out as being worth thinking about.
His comments revolve around ethical concerns with potential future developments like therapies and enhancements.
I neither agree nor disagree with his thoughts, I merely point them out as being worth thinking about.
Thursday, February 17, 2005
Sixth sense....
Not that this is anything new to anyone who is paying attention, but the neurological results are certainly interesting.
Wednesday, February 16, 2005
Tuesday, February 15, 2005
Do we really understand brain activity?
This article has some very serious implications for our current care of those who are in a coma and show little or no brain activity.
Thursday, February 10, 2005
Friday, February 04, 2005
Thursday, February 03, 2005
Wednesday, February 02, 2005
Stem cells turned into motor neurons
Seemingly good news. Not practical yet, and the technology is only in its infancy, but we'll see.
Monday, January 24, 2005
Tuesday, January 11, 2005
Wednesday, January 05, 2005
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