PSYC 4353 Study Guide - Midterm Guide: Optic Nerve, Prosopagnosia, Hearing Aid
Document Summary
Learning induced cortical plasticity: neurogenesis- synthesis {creation} of new neurons, olfactory bulbs, dentate gyrus (dg) of the hippocampus. Ashlee bahr: epileptic with hemispherectomy (entire hemisphere(50% of brain)is removed) Astrocytoma- primary malignant tumor causing a mass effect. Something sharp/hot penetrating the brain and killing cells (ex: phineas gage and rep. gabrielle gifford) Secondary injury: tissue around the primary injury (closed head/penetrating head), also dies = penumbra. Primary injury results in breakdown of bbb around injury. Astrocytes stop taking up glutamate na+ & ca+ accumulate inside neurons excess ca+ & glutamate kill neurons that survived the initial trauma: strategies to reduce secondary injury. Also target neurons die off will also die: neural changes that support functional recovery (this is not brain repair) Cingulate cortex amygdala hippocampus: pain inhibition, gate theory- the spinal cord areas that receive messages from pain receptors also receive input from axons descending from the brain.
