PSYC31H3 Chapter 3: Chapter 3 Notes
Document Summary
Long held belief that neurons od not proliferate after early stages of dev is incorrect. New neurons are produced in some brain regions of adults in a number of mammalian species incl human perhaps playing a role in brain injury repair new learning and maintenance of healthy neural functioning. Identified in the hippocampus and olfactory bulb in mammalian brains and implicated in other limbic regions in the neocortex, striatum and sn. In the hippocampus, it is thought to be esp. critical for maintaining normal cognition and emotional well being. Basal ganglia and cerebellum increasingly appreciated for influences on cognition and psychiatric disorders. Even motor cortex appears to play active role in processing abstract learned info. Subtle aberrations coming from few neurons disrupt larger networks central to model of cerebral dysfunction. Neuroanatomical correlates are not confined to any local area of the brain.
