PSYC30018 Lecture Notes - Spring 2018 Lecture 17 - Neuropathology, Habituation, Motor neuron disease
Document Summary
James papez (1937: first proposed a circuit theory of emotion processing in the brain, network of brain regions including the hypothalamus, thalamus, cingulate and hippocampus. Involved in emotion processing but also involved in other processes: kluver and bucy (1939) lesion work. First do(cid:272)u(cid:373)e(cid:374)ted that da(cid:373)age to (cid:373)edial te(cid:373)poral lo(cid:271)es (cid:272)aused (cid:858)ps(cid:455)(cid:272)hi(cid:272) (cid:271)li(cid:374)d(cid:374)ess(cid:859) i(cid:374) monkeys, featuring a lack of fear or tendency to approach objects normally eliciting a fear response. Lateral nucleus of the amygdala acts as a convergence area for information from multiple brain regions, allowing for the formation of associations underlying fear conditions. Central nucleus initiate an emotional response if a stimulus, after being analysed, is determined to represent threat or danger: conditioned fear experiments. Used to understand the function of the amygdala. Neutral stimulus acquires aversive properties by virtue of being paired with an aversive event produces a conditioned fear response (eg. anxiety or nausea) Damage to the amygdala impairs conditioned fear responses.
