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Tag: "cortex" at biology news

Gambling monkeys give insight into neural machinery of risk

...ircuitry. "We don't think the posterior cingulate cortex is by any means the only area that's important for assessing risk, for deciding what's valuable and for actually making a choice based on that valuation," said Platt. "We think that this is just part of a whole circuit that's involved in that process...

Thinking the pain away? Study shows the brain's painkillers may cause 'placebo effect'

...ght anterior cingulate, the right anterior insular cortex and the left nucleus accumbens. When the researc...r example, activity in the dorsolateral prefrontal cortex was associated with the expectation of pain relief reported by the volunteers. In other areas, that ...

Frog peptides block HIV in lab study

... to occur as the different regions of the cerebral cortex that mediate perception, thought and action become functionally disconnected. Tononi and his team observed the disconnect when brief, magnetically generated pulses of electricity were directed to specific regions of the brain. The pulses stimulated ...

Deep sleep short-circuits brain's grid of connectivity

... to occur as the different regions of the cerebral cortex that mediate perception, thought and action become functionally disconnected. Tononi and his team observed the disconnect when brief, magnetically generated pulses of electricity were directed to specific regions of the brain. The pulses stimulated ...

New clue to cocaine addicts' quirky behavior

...s between two higher brain regions--the prefrontal cortex and the hippocampus--and the nucleus accumbens, wh...lved in processing reward behavior. The prefrontal cortex is involved in processing information, and the hippocampus is involved in learning and memory. The ...

New tool reveals secrets of migrating cells

...to purposeful beeliners that immediately leave the cortex for the interior medulla of the thymus. "We're no...alt their wanderings and make a beeline out of the cortex to the medulla, something immature T cells can't do. The scenario they've reconstructed from the vi...

Study shows humans have ability to track odors, much like bloodhounds

...trils have separate areas of the primary olfactory cortex - the brain's smell center - devoted to them, indi...ed by more activity in the region of the olfactory cortex associated with the particular nostril. "While a subject was doing this task, I could look at the b...

Brain May Be Less Plastic Than Hoped

The visual cortex of the adult primate brain displays less flexibili...ons “filled in?blank spots in the motor and visual cortex after these areas fell silent from lack of sensory input due to injury. This led to speculation that...

Genpathway and Baylor College of Medicine Identify New Genes in Breast Cancer

...s olfactory cortex. Information from the olfactory cortex is then sent to many regions of the brain, ultimat...dorant receptor. Earlier studies of the olfactory cortex by Buck's group indicated that in contrast to the straightforward mapping of inputs from odorant rec...

Decoding the logic of olfaction

...s olfactory cortex. Information from the olfactory cortex is then sent to many regions of the brain, ultimat...dorant receptor. Earlier studies of the olfactory cortex by Buck's group indicated that in contrast to the straightforward mapping of inputs from odorant rec...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...a much greater tactile sensitivity in the auditory cortex of their brain than people with normal hearing. Working in the laboratory of Christopher Contag, an associate professor of pediatrics at Stanford, O'Connell-Rodwell has been investigating the possibility that newborns with severe hearing loss could h...

Brain Scans Reveal How Gene May Boost Schizophrenia Risk

...sychotic drugs that block dopamine. The prefrontal cortex is critical for motivation, learning in response t...are thought have more dopamine in their prefrontal cortex and perform better on tasks involving that part of the brain. Schizophrenia patients typically perfo...

New insight into people who 'see' colors in letters and numbers

...ter activation in a color-perception region of the cortex when viewing graphemes, compared to normal control subjects. The researchers found that the strength of this activation influences the strength of the synesthetic colors. In fMRI, harmless radio waves and magnetic fields are used to map regions of hi...

Alcohol's effects on gene expression in the central nervous system

...rentially alters gene expression in the prefrontal cortex of mice. More than 300 genes were found to be altered by acute alcohol treatment. "The prefrontal cortex is involved in motivated behaviors," noted McBride. "Studies with humans indicate that this brain re...

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