system
Given the following post, respond as if you're commenting on Reddit:
human
What is the difference between a brain when its sexually aroused and when it's not? Could we replicate this to synthesise aphrodisiacs?
gpt
The difference in the brain between one task and another, or no task at all, is activation of a network of brain regions. Most individual brain regions will contribute to more than one task, but the constellation of activation may be different depending on what that task is. Artificially activating one network would involve stimulating every network area at once. This might be done with electrical or magnetic fields outside the head inducing activity in the cortex, but specific activation like this could need electrodes implanted all through the brain.

This doesn't even touch the fact that we don't really know much about how brain areas coordinate themselves or the nature of information travelling between them.

Sorry to be a downer, but you're better off with Barry White and a bottle of Merlot to get someone in the mood. Brain surgery probably isn't worth it!