PSY 351LEC Lecture Notes - Lecture 21: Ventromedial Nucleus Of The Hypothalamus, Hans Selye, Anterior Pituitary
22 May 2019
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Descending pathway : vmh (ventromedial hypothalamus) -- Emotion: a cognitive experience accompanied by an affective reaction and physiological arousal. Cannon-bard theory: stimulus affective reaction and psychological arousal (same time) Schachter-singer: psychological response-->attribute to stimulus (cognitive experience)--> approach affective reaction. General adaptive syndrome(hans selye): stress event cause alarm cause change in the system, and start adaptation stress or resistance stress then system become exhaustion (incorrect) Behavioral response: stressor dependent, can be learned. Hypothalamus -->corticotrophs(anterior pituitary)-->crf/crh-->acth (stimulate glucocorticoid adrenal cortex) Glucocorticoids: stimulate gluconeogenesis, formation carbohydrate from protein and amino acid,decrease protein content of most tissues except liver. Epinephrine (sns) and norepinephrine bind same receptor most time. * 1 receptors (vasoconstriction less blood in skin and gi tract ), * 1 receptor( make heart pump faster more sensitive to epi), * 2receptor only bind to epinephrine vasodilation (find in lung,skeletal. Anti depression drug: tracipoln block reuptake get more norepinephrine or serotonin in synapse\ Major depression vs dysthymia(long period, not that severity.
