PSYC3338 Lecture Notes - Lecture 18: Periaqueductal Gray, Posttraumatic Stress Disorder, Prefrontal Cortex
Document Summary
Neurobiology of ptsd - post traumatic stress disorder. Ptsd is an extreme form of adaptive behavior composed of: The pathway responsible for this thing we call fear conditioning . Classical conditioning paradigm involving pairing unconditioned stimulus with conditioned stimulus pavlov. Prefrontal cortex is connected to the amygdala we have 2 (one on each side of your brain). Amygdala is deep in the temporal lobe and close to the hippocampus without memory, wouldn"t have ptsd. 3 main parts to the amygdala central nucleus, basolateral nuclei, and 1 more that we won"t really talk about . All stress responses alter brain and body as a way to make it easier for you to get out of harm"s way. All of these have none physiology that contribute to ptsd in ways that help us understand it. Situation: rat hears a tone and is then shocked lightly. Tone is played processed by auditory cortex goes to amygdala.
