PSY 393 Chapter Notes - Chapter 8-9: Posttraumatic Stress Disorder, Fluoxetine, Glucocorticoid
Document Summary
Neurotransmitters cause adjacent neurons to fire or inhibit neuronal impulses. Enzmye mao monoamine oxidase regulates breakdown of dopamine, norepinephrine, serotonin. Low level of mao associated with sensation seeking, extraversion, criminal behavior. Allow body to control body movements: respond to rewards, approach attractive objects/people. Behavioral activation system (nucleus accumbens and dopamine) produces/reinforces motivation to seek rewards: low bas scores risk for depression. Reward deficiency syndrome: alcoholism, drug abuse, smoking, compulsive eating, adhd, gambling: problem with processing dopamine. Dopaminergic systems could be related to manic-depressive disorder. Dopamine possibly linked to extraversion, impulsivity, etc. Help ward off depression, avoid worrying excessively, being quick to anger. Low serotonin: irrational anger, hypersensitivity to rejection, worry, risk-taking: criminal behavior, arsonists. Anti-depressive drugs (paxil, prozac) causes serotonin to break down: make negative emotions less severe and leave positive emotions unaffected. Epinephrine and norepinephrine respond to stress their release = adrenaline rush . Flight or fight response: neurotic or overly anxious people may have overactive norepinephrine system.
