INAH - INAH-2 twice as large in males small cell bodies 3.7...

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INAH (Allen, Hines, Shryne, Gorski 1989) Interstitial Nuclei of the Anterior Hypothalamus (1-4) : referring to 4 cell groups in the PO-AHA (preoptic-anterior hypothalamic area) -Give pics of location Used 22 autopsied normal human brains (11 age-matched pairs), no known neurological disorders Large chronological age range: Males between age 5 and 81, females 4-81 Mostly white subjects, but two Hispanic males and one black male Selected 4 cell groups within hypothalamus that stained darkly with thionin: did not find clearly homologous areas to other species Show INAH 1 and 2 cells, 3 and 4 Only 2 and 3 exhibited stat. significant sexual dimorphism
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Unformatted text preview: INAH-2: twice as large in males, small cell bodies 3.7 times larger in females of child-bearing age than other females; in those 3 women it was of similar volume to males May respond to circulating hormones like known nuclei in canaries and gerbils INAH-3 2.8 times larger in males than females, large cell bodies Similar to SDN-POA of the rat in that it is between optic chiasm and anterior commisure, and has large cell bodies Purpose of the nuclei unknown: it is known that electrical stim to POA of monkeys increases male sexual bejavior, and lesions of POA decrease male reproductive behavior in the primate...
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This note was uploaded on 03/26/2010 for the course NEUROSCI 675 taught by Professor Terasawa during the Fall '08 term at University of Wisconsin.

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