Is pain patients' psychophysiological arousal while watching their videotaped medical interview similar to their arousal during participation in this medical interview?

Showing videos of medical consultation as a proxy for participation is being increasingly applied in research in order to let patients (re-)experience social interaction in medical settings. If subjects do indeed experience the interaction process when watching this on video, then they should show similar patterns in physiological arousal as when actually participating. We assessed whether watching one's own interaction in a medical setting on video lead to the same skin conductance activity (SC) as when participating in that interaction. Fifteen women with fibromyalgia participated in a medical interview and, after a break, watched the video of this interview. Skin conductance activity was measured throughout the medical interview and, again, while the participants watched their own video. Coherence in SC between these two conditions was assessed. In eleven subjects (73%) a significant positive coherence between the two measurements was found, indicating that watching your own videotaped consultations evokes comparable psychophysiological arousal in most but not all participants. This physiological coherence might be an indication that people are capable of re-experiencing their interaction process by watching replays of these situations, although further research is needed. The positive coherence also supports skin conductance as a reliable moment-to-moment measure for physiological arousal throughout the doctor-patient interaction process. The next step should be linking the changes in physiological arousal to what exactly is happening at that moment in the interaction between doctor and patient. This could provide support for the validity of experimental designs in which standardized videotaped medical visits are shown to patients. More research is needed on predictors of (non-)coherence in certain subjects.

Research Highlights
► Patients' skin conductance was measured during a clinical interview in a medical setting and when patients watched their interview on video.
► In 11 subjects out of 15 (73%) a significant positive coherence between the two measurements was found.
► This indicates that watching your own videotaped consultations evokes comparable psychophysiological arousal in most but not all participants.