Fear and physiological arousal during a virtual height challenge–effects in patients with acrophobia and healthy controls

Author: Diemer, J.; Lohkamp, N.; Muhlberger, A.; Zwanzger, P.

Description: Virtual reality (VR) exposure therapy is becoming increasingly established, but the mode of action is not well understood. One potential efficacy factor might be physiological arousal. To investigate arousal during VR exposure, we exposed 40 patients with acrophobia and 40 matched healthy controls to a VR height challenge and assessed subjective (fear ratings) and physiological (heart rate, skin conductance level, salivary cortisol) fear reactions. Patients experienced a significant increase of subjective fear, heart rate and skin conductance level. Unexpectedly, controls, who reported no subjective fear, also showed an increase in heart rate and skin conductance. There was no increase in salivary cortisol levels in either group. Physiological arousal in acrophobic patients, in contrast to subjective fear, might not be stronger than that of controls confronted with height cues in VR, indicating marked discordance across symptom domains. The lack of a cortisol response in a clearly stressful paradigm warrants further study.

Subject Headings: Adult; Analysis of Variance; Arousal/physiology; Case-Control Studies; Fear/psychology; Female; Galvanic Skin Response/physiology; Healthy Volunteers; Heart Rate/physiology; Humans; Hydrocortisone/metabolism; Male; Middle Aged; Phobic Disorders/psychology; Saliva/chemistry; Surveys and Questionnaires; Virtual Reality Exposure Therapy/methods; Anxiety disorders; Challenge; Exposure therapy; Psychophysiology; Specific phobia; Virtual reality

Keywords: Fear and physiological arousal during a virtual height challenge–effects in patients with acrophobia and healthy controls

Publication year: 2016

Journal or book title: Journal of Anxiety Disorders

Volume: 37

Issue:

Pages: 30-39

Find the full text : https://www.sciencedirect.com/science/article/pii/S0887618515300311

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Type: Journal Article

Serial number: 2722