PSYC 3201 Lecture Notes - Lecture 14: Vasopressin, Preoptic Area, Adrenal Gland
12 Dec 2016
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2 types of influences on structure/function: activational (current hormonal state, organizational (earlier hormonal state) Metabolism is influenced by thyroxin and increases hr, respiration, and activity levels. Testosterone is a male sex hormone and it influences beak color (brighter red means more testosterone) and combs on the heads of chicken. Adrenalin is secreted by the adrenal gland and is responsible for fight/flight. It also affects memory shots of adrenaline help rats remember food location in task. Brain area responsible for mating behavior (sexually-dimorphic nucleus of medial preoptic area) Leads to mounting behavior in male rats and lordosis in female. This area develops prenatally, and is larger in males than females. But if females are injected with testosterone they have just as large areas. Sexual dimorphism (difference) due to prenatal androgen; but won"t see behavior develop until puberty. Prarie vole has many receptors for oxytocin (m)/vasopressin (f), are monogomous, and have strong parental bonds.
