VESPAVisual Erotica, EMG, and Sexual Psychophysiological Arousal (VESPA)

HYPOTHESES: Investigators hypothesize that, relative to the neutral films, PFM EMG activity will significantly increase in response to the erotic film as measured by the labial, anal, and vaginal EMG probes. Investigators hypothesize that, relative to the anxiety-provoking film, PFM EMG activity will significantly increase in response to the erotic film as measured by the labial, anal, and vaginal EMG probes. Investigators hypothesize that continuously measured subjective sexual arousal (via the arousometer) will correlate significantly with PFM EMG activity during the erotic film.