PSB-2000 Study Guide - Midterm Guide: Psychopathology, Hemispherectomy, Mania
Document Summary
Learning and memory: what is an engram, and what were lashley"s critical mistakes in looking for the engram, a physical representation of a memory, lashley: trained rats, then cut* or lesioned^ certain areas of cortex. What brain region is important for working memory: stm, small capacity. Cyzuauf: fades quickly unless rehearsed, once forgotten, it is gone, working memory is alternate way of thinking of stm: Lasts hours to days w/o rehearsal: where car is parked, when/where lunch date is. Time needed for consolidation varies, especially depending on familiarity of topic & emotional content: ltm, infinite capacity, lasts indefinitely, could be forgotten and then later remembered w/ appropriate cues. What receptors are necessary: ltp: a burst of stimulation from axons, e. g. , 100 excitations per second for. Korsakoff"s syndrome, parkinson"s disease, huntington"s disease and cjd: aka. Wernicke-korsakoff syndrome: brain damage caused by prolonged thiamine (vitamin b1) deficiency. Usually in alcoholics: poor diet: lots of carbs; no vitamins.
