Abstract：
:In zebra finches, androgens stimulate song production and promote growth of the neural regions controlling song. Early exposure to estrogen establishes this sensitivity to androgens and increases the number of androgen-accumulating cells in two song regions, the hyperstriatum ventralis pars caudalis (HVc) and the magnocellular nucleus of the anterior neostriatum. To examine if these regional changes in androgen accumulation could directly influence androgen responsiveness elsewhere in the song system, we combined autoradiographic and retrograde tracing techniques to determine if androgen-accumulating HVc neurons project to other vocal control nuclei. We report here that both major efferent projections from HVc (to Area X and the nucleus robustus of the archistriatum) include a substantial proportion of androgen-accumulating neurons. These data are consistent with the hypothesis that the extent of androgen accumulation in HVc may in turn regulate the androgenic sensitivity of other song regions.
journal_name
Brain Resjournal_title
Brain researchauthors
Sohrabji F,Nordeen KW,Nordeen EJdoi
10.1016/0006-8993(89)90715-4subject
Has Abstractpub_date
1989-05-29 00:00:00pages
253-9issue
1-2eissn
0006-8993issn
1872-6240pii
0006-8993(89)90715-4journal_volume
488pub_type
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