PSC 101 Lecture Notes - Lecture 10: California Mouse, Complexity Gaming, Preoptic Area

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28 Oct 2016
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Psc 101 lecture 10 parental behavior (cont. ) and aggression. In many species, reproduction does not end with the birth of offspring. Female and male parental care are required for offspring to mature. Some brain areas involved in sexual behavior are also activated during parental behavior. Rat mothers show 4 behaviors: nest building, crouching over pups, retrieving pups, and nursing. During pregnancy, exposure to hormones will help prepare the mother rat"s brain to display these maternal behaviors immediately after giving birth. Estrogens promote maternal behavior in the medial preoptic area. Male parental behavior is common in fish and birds. Only about 3% of mammalian species show male parental behavior. Male hormonal profiles: biparental hamsters, mice, primates, and humans have similar hormonal profiles. To determine cause and effect, hormone manipulations are needed. Manipulations show testosterone can increase or decrease male parental behavior (or no effect) Manipulation of prolactin generally has no effect. Testosterone increases male parental behavior through conversion to estrogen.

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