You are not currently logged in.
Access JSTOR through your library or other institution:
Gonadal Hormones Induce Dendritic Growth in the Adult Avian Brain
Timothy DeVoogd and Fernando Nottebohm
New Series, Vol. 214, No. 4517 (Oct. 9, 1981), pp. 202-204
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/1686577
Page Count: 3
You can always find the topics here!Topics: Female animals, Testosterone, Neurons, Dendrites, Bird songs, Adults, Hormones, Brain, Shelters, Gonadal hormones
Were these topics helpful?See something inaccurate? Let us know!
Select the topics that are inaccurate.
Preview not available
Ovariectomized adult female canaries were treated with physiological doses of testosterone, dihydrotestosterone, or estradiol. Singing, which is typical of males, occurred in the testosterone-treated birds but not in any of the other birds. The effect of these hormones was assessed on dendrites from a class of neurons in the nucleus robustus archistriatalis (RA), a forebrain nucleus for song control. The RA neurons of the testosterone-treated birds had dendritic trees resembling those of intact males. The RA neurons of the estradiol- and dihydrotestosterone-treated birds resembled those of intact females. All hormone-treated groups had dendrites that were significantly longer than those of untreated ovariectomized females. Thus gonadal hormones induce dendritic growth in the adult avian brain.
Science © 1981 American Association for the Advancement of Science