PSYCH 130 Study Guide - Midterm Guide: Acute Stress Reaction, Locus Coeruleus, Thought Suppression
Document Summary
Symptoms do not reach the severity of full-blown manic or depressive episodes: lifetime prevalence: 4, etiology of mdd and bdi, heritability a. i. Diminished function of dopamine system could explain deficits in pleasure, motivation, and energy b. i. 2. Lowering serotonin can cause temporary depressive symptoms among people with a family history of depression. (less sensitive serotonin receptors) b. ii. Increase in dopamine can trigger manic symptoms - receptors are overly sensitive. Serotonin - same as depression: neural regions (and direction of activation differences) b. ii. 2. c. i. Mdd: elevated - part of vulnerability, not result c. ii. Dorsolateral prefrontal cortex - effective emotion regulation c. iii. 1. Striatum: plays a role in motivation to pursue rewards c. v. 1. Mdd: diminished when viewing emotional stimuli, particularly during positive feedback c. v. 2. Hpa axis: amygdala sends signals to activate c. vi. 1. Bipolar is also poorly regulated: social factors/triggers d. i. Childhood adversity increases risk of (chronic) depression. d. i. 1. a. d. i. 1. b. Child abuse sets the stage for later risk factors.
