PSYCO104 Lecture Notes - Lecture 25: Frontal Lobe, Reinforcement, Amygdala

• School: University of Alberta
• Department: Psychology
• Course: PSYCO104
• Professor: Eric Legge

Document Summary

Psych 104 lecture #25 learning and adaptation pt. Escape and avoidance: based on negative reinforcement, escape conditioning: learn a response to terminate an aversive stimulus. If cold, put on a sweater to escape aversive state: negatively reinforced by desired consequence so you don"t shiver, avoidance conditioning: learns a response to completely avoid an aversive stimulus. Eg. walking a different route to avoid dog. Escape conditioning: shock delivered through one compartment, animal escapes to other. Avoidance conditioning: shock delivered after a light goes on whenever animal sees light, runs to other compartment: two factor (process) theory of avoidance learning. Light (ns) shock (us) fear (ur) becomes. Light (sd) climb over barrier (r) reduction in fear (sr: negatively reinforced, neuroscience and fear, amygdala. Increased activity in right amygdala of fearful event. Ptsd: increased activity in right amygdala, decreased frontal cortex activity. Schedules of reinforcement: continuous reinforcement (crf, every response of a particular type is reinforced.