PSYC23H3 Study Guide - Midterm Guide: Locus Coeruleus, Raphe Nuclei, Beta Blocker
Document Summary
This arti(cid:272)le e(cid:454)plores the relatio(cid:374) (cid:271)et(cid:449)ee(cid:374) e(cid:454)ter(cid:374)al fa(cid:272)tors that (cid:272)ause stress a(cid:374)d the (cid:271)iolog(cid:455) of the (cid:373)i(cid:374)d"s. Taming stress response: looks at the role that stress plays in the two most common classes of psychiatric disorders: anxiety and major depression. Glucocorticoids (in humans, the relevant glucocorticoid is called cortisol, also known as hydrocortisone) Epinephrine and glucocorticoids mobilize energy for muscles, increase cardiovascular tone so oxygen can travel more quickly, and turn off nonessential activities like growth. In a fight-or-flight scenario, epinephrine is the one handing out guns; glucocorticoids are the ones drawing up blueprints for new aircraft carriers needed for the war effort. Anxiety affects the limbic system (the brain region concerned with emotion) One structure is primarily affected: the amygdala involved in the perception of and response to fear-evoking stimuli the amygdala receives input from neurons in the outermost layer of the brain, the cortex, where much high-level processing takes place.
