PSYCH 15 Lecture Notes - Lecture 13: Mammillary Body, Amygdala, Ischemia
Document Summary
11/8/16: lecture 13: conclusion of lecture 12 + learning, memory, and amnesia. Damage to peripheral nerves or to primary cortical areas. Cells not created, but connections are changing (more connections, not more cells) Lesion one retina in monkeys--v1 neurons originally responding to lesioned area now responds to adjacent area--happened within minutes. Continuous competition for cortical space by functional circuits. Blinded individuals--auditory/somatosensory input may be processed in former v1 area. Hard to conduct controlled experiments--can"t distinguish between true recovery and compensatory changes. Cognitive reserve (education/intelligence) thought to play important role in recovery of function. May prevent cognitive tasks to be accomplished in new ways. Adult neurogenesis may play role in recovery (hippocampus) Correlation between depression and low neurogenesis rate. Learning, memory, and amnesia: how your brain stores information. Partial seizures for many years (~100 per day) Age 27--resection of mtl on both sides. Hippocampus and adjacent areas also removed bilaterally. Seizures dramatically reduced, but so was long-term memory.
