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Brain & Nervous System

New brain cells listen before they talk

Newly created neurons in adults rely on signals from distant brain regions to regulate their maturation and survival before they can communicate with existing neighboring cells - a finding that has important implications for the use of adult neural stem cells to replace brain cells lost by trauma or neurodegeneration.

Brain Yields Clues About Why Some Succumb While Others Prevail

Results of a new study may one day help scientists learn how to enhance a naturally occurring mechanism in the brain that promotes resilience to psychological stress. Researchers funded by the National Institutes of Health's National Institute of Mental Health (NIMH) found that, in a mouse model, the ability to adapt to stress is driven by a distinctly different molecular mechanism than is the tendency to be overwhelmed by stress. The researchers mapped out the mechanisms - components of which also are present in the human brain - that govern both kinds of responses.

Brain measurements could lead to better devices to move injured or artificial limbs

This new brain study constitutes a considerable step forward towards deciphering intentions to perform movements by persons who are paralyzed or are amputees, thus paving the way for creation of better instruments for converting brain activity into actual movements.

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