PSYC55H3 Lecture Notes - Lecture 10: Phineas Gage, Angular Gyrus, Medial Frontal Gyrus
Document Summary
Papez argues that all these structures are interconnected. Maclean- added certain structures to papez circuit. Consists of multiple nuclei and connects to multiple regions in the brain. Kluver-bucy syndrome- if you take out front of temporal lobe- extremely tame, lack fear, social hierarchy becomes disrupted, no endogenous behaviour, sexual behaviour changes, visual agnosia, the way they explore objects changed- they explored orally. If u selectively lesion amygdala- you get specific type of impairments not whole symptoms. Amygada lesion- no fear, explored the new things. Control monkeys- food presented own- quick response, by rubber snake- takes time. Lesion monkeys- irrespective whether alone or with snake, monkeys go right ahead and grab the food. Implicitly learn that something is associated with punishment we avoid that- fear conditioning. In a box give foot shock- very natural startle response, loud noise- startle response. During training- light with a shock- implicitly learns light is associated with shock.