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Chris Chatham is a grad student at the University of Colorado, Boulder.

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September 27, 2007

False Memories vs Veridical Recall: Negative Correlations Among Adults

Cognitive Neuroscience ] 

Cognitive scientists are increasingly aware of how individual differences can confound experimental results. That is, differences in group means cannot always be interpreted clearly if, for example, only some subset of individuals in each group demonstrates the effect. Consequently, even...

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September 26, 2007

Memory Before Language: Preverbal Experiences Recoded Into Newly-Learned Words

Developmental Psychology ] 

Infantile "amnesia" refers to the apparent absence or weakness of memories formed at ages younger than 3 or 4. Some evidence indicates that these early-life memories are not actually lost or forgotten, but are rather merely mislabeled or otherwise inaccessible...

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September 25, 2007

Turtles all the way Down: Attractor Dynamics vs Backwards Inhibition in Lag-2 Repetition Cost

Cognitive Neuroscience ] 

Say you are writing an email when the phone rings. After the phone call, you return to finish the email. Are you slower to continue writing this email than you would be if you'd been doing something else prior to...

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September 24, 2007

Prospective Memory: More Retrospective Among Children?

Developmental Psychology ] 

What processes allow us to execute delayed intentions? This ability, known as prospective memory, is often considered to have two constituent parts: a prospective component which involves forming the intention and possibly maintaining it until action execution, and a retrospective...

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September 21, 2007

When Noise Helps: Stochastic Resonance and ADHD

Cognitive Neuroscience ] 

The word "noise" comes from the latin nausea, meaning disgust or annoyance. But in the phenomenon known as stochastic resonance, noise can actually be a good thing: it can serve as a signal amplifier in thresholded systems. This phenomenon is...

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September 20, 2007

Do Neural Networks Segregate Information By Frequency?

Cognitive Neuroscience ] 

Can information be directed to different networks in the brain depending on the "transmission frequency", like the channels on a TV? A 2006 Cerebral Cortex paper reveals that this may not be as absurd as it sounds. A relatively new...

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September 19, 2007

Motion Illusions: Standstill, Motion-Color Asynchrony, Intersectional Luminance

Cognitive NeuroscienceLink Posts ] 

In the "motion standstill" illusion, a rapidly moving object is perceived as motionless, and yet not blurred. This means that color, depth, and shape are accurately processed while the motion system fails: in fact, subjects are no better at detecting...

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September 14, 2007

The Visual Word Form Area of the Left Fusiform Gyrus

Cognitive NeuroscienceDevelopmental Psychology ] 

The claim that language processing can be carried out by purely "general purpose" information processing mechanisms in the brain - rather than relying on language-specific module(s) - may seem contradicted by a slew of recent neuroimaging studies demonstrating what appears...

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September 10, 2007

Awakened by a Pulse: Deep Brain Stimulation in Minimally Conscious Patients

Cognitive Neuroscience ] 

An article in last week's Nature describes a highly experimental - but also highly promising - new treatment for patients who have undergone massive traumatic brain injury. These patients are typically left in a "minimally conscious" state, showing little to...

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