fMRI Study

We showed that genes on the Y chromosome are insufficient to cause male-typical brain responses to sexual images because women with CAIS had brain responses similar to typical women. If genes on the Y chromosome were sufficient, then women with CAIS would have shown male-typical brain response patterns. This indicates that male-typical brain responses to sexual images are instead likely shaped by androgens, though socialization may also play a role (Hamann, Stevens, Vick, Bryk, Quigley, Berenbaum, & Wallen, 2014).