Brain scans of porn viewers

Researchers from the University of Picardie Jules Verne were curious about what happens in the brain to cause an erection when men are exposed to certain images. Specifically, they wondered whether "mirror neurons," are involved in the erection response. Mirror neurons fire both when you do something and when you observe that same thing being done by another. So Harold Mouras and his colleagues showed porn videos to eight men while scanning their brains. (The videos were mixed in with fishing documentaries and other footage that isn't erotic, er, to most people.)

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