title: Changes in erectile response to repeated audiovisual sexual stimulation.
abstract: OBJECTIVE
  To determine changes in erectile response to repeated audiovisual sexual stimulation in patients with psychogenic impotence and normal men.
  
  
  METHODS
  The same erotic video was shown to 45 men (20 patients with psychogenic impotence and 25 normal men) for 3 consecutive days. Their erectile responses during the audiovisual stimulation were monitored using RigiScan (Dacomed, Minneapolis, Minn., USA), and the maximal rigidity of erection, sustained for more than 5 min, was measured. The rigidities on the first, second and third days were comparatively analyzed. Whether previous multiple viewings of the erotic movie and previous exposure to the same or a similar movie influenced the erectile response were also evaluated.
  
  
  RESULTS
  Rigidity on the third day was significantly decreased compared to that on the first day in both patients with psychogenic impotence and normal controls (p < 0.05), regardless of the frequency of previous viewings and the previous exposure to a similar movie. Rigidity on the first day was significantly lower in the group with multiple viewings than in the group with fewer viewings (p < 0.05).
  
  
  CONCLUSIONS
  Real-time monitoring of penile erection during audiovisual sexual stimulation may result in false-negative responses when patients are repeatedly exposed to the stimulation.
authors.affiliation: Department of Urology, College of Medicine, Chung-Ang University, Seoul, Korea.
authors.forename: S C
authors.initials: SC
authors.lastname: Kim
authors.forename: J H
authors.initials: JH
authors.lastname: Bang
authors.forename: J S
authors.initials: JS
authors.lastname: Hyun
authors.forename: K K
authors.initials: KK
authors.lastname: Seo
mesh_terms: D000328:Adult; D007172:Erectile Dysfunction / Q000175:diagnosis* / Q000523:psychology; D004882:Erotica; D006801:Humans; D008297:Male; D008875:Middle Aged; D010410:Penile Erection / Q000523:psychology*; D014743:Videotape Recording