01:830:331 Lecture Notes - Lecture 40: Temporal Lobe, Nucleus Basalis Of Meynert, Optic Chiasm
24 Jul 2016
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~all sensory system relay through thalamus except for olfaction. From thalamus, they can then go to la in amygdala. ~olfaction goes straight to medial nucleus in amygdala. ~from medial nucleus, olfactory info goes to lateral nucleus. ~in the end, all sensory info ends up in lateral nucleus of amygdala, either from olfaction or thalamus/cortex. ~history of studies on the role of amygdala in emotion. ~brown & schafer made large lesions on medial temporal lobe of monkeys. The fierce, wild monkeys became tame and passive. ~kluver & bucy did the same thing as b&s and named it kluver-bucy syndrome. ~downer looked at unilateral amygdala lesion and optic chiasm lesion. Cut optic chiasm, so each eye could only send info to ipsilateral hemisphere, from temporal view. Found that amygdala damage impairs the ability of emotion to modulate strength of memory. You remember events better when they were emotionally arousing. Urbach-weithe patients have average memory of all events, regardless of emotional arousal.
