I tried looking this up online but I got a bunch of stuff I didn't want. I don't want a pill to get it sexually aroused nor do I want a six page essay about every little factor. I just want thee exact brain that causes sexula arousal. I don't mean endorfins. I need the info for a story.
The part of the brain that controls sexual arousal is the hypothalamus. It is located in the middle of the cerebral cortex. It regulates appetite, temp, thirst, a few aspects of memory, and sexual arousal.
Hope this helped!