This subproject is one of many research subprojects utilizing theresources provided by a Center grant funded by NIH/NCRR. The subproject andinvestigator (PI) may have received primary funding from another NIH source,and thus could be represented in other CRISP entries. The institution listed isfor the Center, which is not necessarily the institution for the investigator.Evidence that prenatal and/or perinatal androgen exposure influences cognitive function is controversial, as are the specific regional changes within the brain that may underlie such influences. These studies, using functional magnetic resonance imaging (fMRI) are designed to test the hypothesis that androgen exposure of the brain present in normal males during critical periods of differentiation and development leads to sexual dimorphism in brain function. The hypothesis is that androgen exposure alters brain organization, and is responsible for dimorphism between the sexes in areas of brain activation, resulting in sex differences in the performance of certain tasks as demonstrated by fMRI.
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