Effects of rhythmic eye movements during a virtual reality exposure paradigm for spider-phobic patients.

Rhythmic eye movements performed during eye movement desensitization and reprocessing (EMDR) therapy have been shown to evoke a physiological de-arousal pattern. OBJECTIVES: Here, we examined whether the efficacy of a virtual reality exposure therapy (VRET) paradigm for phobic patients could be improved by adding rhythmic eye movements. DESIGN: Spider-phobic patients (N = 53) were randomly assigned to either a group performing rhythmic eye movements or a control group undergoing exposure without such eye movements. METHODS: During the VRET session, heart rate, electrodermal activity, eye movements, and subjective fear ratings were recorded. Participants underwent behavioural avoidance tests before and after treatment as well as a follow-up 10-14 days later. Questionnaire data were assessed before exposure and at follow-up. RESULTS: There were clear treatment effects in both groups with almost no group differences (i.e., the subjective fear ratings and the skin conductance response). CONCLUSIONS: Contrary to our expectation, the implementation of rhythmic eye movements during virtual exposure did not enhance the effectiveness of the treatment. However, the eye movement group did show a significantly lower heart rate during exposure compared with the control group which might indicate a less stressful treatment. PRACTITIONER POINTS: One-session Virtual Reality Exposure Therapy reduced fear of spiders effectively. Performing rhythmic eye movements during exposure did not enhance therapy effects. Rhythmic eye movements during exposure resulted in lower heart rate than standard exposure.

Diaphragmatic breathing during virtual reality exposure therapy for aviophobia: functional coping strategy or avoidance behavior? a pilot study.

BACKGROUND: Although there is solid evidence for the efficacy of in vivo and virtual reality (VR) exposure therapy for a specific phobia, there is a significant debate over whether techniques promoting distraction or relaxation have impairing or enhancing effects on treatment outcome. In the present pilot study, we investigated the effect of diaphragmatic breathing (DB) as a relaxation technique during VR exposure treatment. METHOD: Twenty-nine patients with aviophobia were randomly assigned to VR exposure treatment either with or without diaphragmatic breathing (six cycles per minute). Subjective fear ratings, heart rate and skin conductance were assessed as indicators of fear during both the exposure and the test session one week later. RESULTS: The group that experienced VR exposure combined with diaphragmatic breathing showed a higher tendency to effectively overcome the fear of flying. Psychophysiological measures of fear decreased and self-efficacy increased in both groups with no significant difference between the groups. CONCLUSIONS: Our findings indicate that diaphragmatic breathing during VR exposure does not interfere with the treatment outcome and may even enhance treatment effects of VR exposure therapy for aviophobic patients. TRIAL REGISTRATION: Retrospectively registered. ClinicalTrials.gov NCT02990208 . Registered 07 December 2016.