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Chris Chatham is a grad student at the University of Colorado, Boulder.
May 27, 2008
In this poster, Bastos, Mullen and colleagues show that they can analyze electrical oscillations on the scalp of human subjects and predict how quickly they will respond in a simple target detection task. They do this by an interesting method...
Posted by Chris Chatham at 1:41 PM • 0 Comments • 0 TrackBacks
May 23, 2008
[ 
, Artificial Intelligence, Cognitive Neuroscience, Computational Modeling ]
The organization of the human prefrontal cortex (PFC) is a lasting mystery in cognitive neuroscience, but not for lack of answers - the issue is deciding among them, since all seem to characterize prefrontal function in very different but apparently...
Posted by Chris Chatham at 4:41 PM • 0 Comments • 0 TrackBacks
May 22, 2008
[ , Cognitive Neuroscience, Computational Modeling ]
"It has attained a certain mystique in the physical and biological sciences because it manages to be both rare and ubiquitous. Examples [...] are found in quasar luminosity, tide and river height, traffic flow, and human heartbeat..." (Gilden & Hannock)...
Posted by Chris Chatham at 12:03 PM • 0 Comments • 0 TrackBacks
May 21, 2008
[ , Cognitive Neuroscience, Developmental Psychology ]
New research from Wharton and the Carlson School shows that a methodologically-appealing measure of impulsivity - hyperbolic discounting rate - may actually reflect a systematic "skew" in the way people perceive time. Previous work has shown that people tend to...
Posted by Chris Chatham at 3:48 PM • 4 Comments • 0 TrackBacks
May 14, 2008
[ , Cognitive Neuroscience ]
In 2001, Yamamoto and Kitazawa showed that the perception of temporal order can be reversed when subjects cross their hands. Subjects closed their eyes and had their hands mechanically touched in quick succession (with stimuli separated in time by a...
Posted by Chris Chatham at 11:12 AM • 1 Comments • 0 TrackBacks
May 13, 2008
[ , Cognitive Neuroscience ]
Your ability to control thought and behavior relative to your peers - a set of capacities known as "executive functions" - is almost entirely genetic in origin, according to a newly in-press paper from Friedman et al. Over 560 twins...
Posted by Chris Chatham at 10:54 AM • 12 Comments • 0 TrackBacks
May 12, 2008
[ , Cognitive Neuroscience ]
Time pervades our understanding of the world - we use it to coordinate our movements, to perceive motion, to plan our behaviors, and perhaps even to understand causality. But it is an under-appreciated factor in cognition. Even in the domain...
Posted by Chris Chatham at 10:30 AM • 0 Comments • 0 TrackBacks
May 9, 2008
[ , Cognitive Neuroscience ]
Our ability to suppress unwanted thoughts and behaviors is thought to be related to a process known as "inhibition," whereby ventrolateral regions of prefrontal cortex (vlPFC) actively suppress inappropriate representations. A 2001 study by Sakagami et al. recorded firing data...
Posted by Chris Chatham at 10:28 AM • 0 Comments • 0 TrackBacks
May 8, 2008
[ , Cognitive Neuroscience, Developmental Psychology ]
Does the resolution or precision of human memory change with its available capacity? In other words, can you remember fewer items with greater precision than you can remember more items? Contradicting intuition, a new paper from yesterday's issue of Nature...
Posted by Chris Chatham at 10:09 AM • 0 Comments • 0 TrackBacks
May 7, 2008
[ , Cognitive Neuroscience, Computational Modeling ]
Complex cognition can be predicted by remarkably simple tasks. For example, the speed with which you choose one of two possible responses can reliably predict IQ. Some theories propose that this relationship is due to differences in something called "processing...
Posted by Chris Chatham at 12:47 PM • 1 Comments • 0 TrackBacks
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