You're standing outdoors at the top of a skyscraper, perched on a narrow board, your toes an inch from the edge. You look down and — whoooaaaa! — you see ant-like cars on the street, many, many stories below. The city's tall buildings spread below in all directions. One wrong move could send you plummeting, so you reach for a flimsy-looking handrail to your right — but your hand just grasps at thin air ...
Oh, did we mention you're seeing all this through goggles and a headset, while standing in a therapist's comfortably carpeted first-floor office?
Virtual reality (VR) technology has the power to trick your perceptions, making you believe, at some level anyway, that you're in a different place. It uses computer-simulated interactive 3-D imagery — often accompanied by tactile or audible cues, sometimes even smell or taste — to give the user the feeling of being immersed in a different environment.
Deployed for decades to train pilots and astronauts, accessible as arcade games since the early 1990s, VR has been gaining interest recently as a therapy tool. The altitudinous scenario described above is used to treat fear of heights, and researchers have found VR effective for a wide range of psychiatric disorders.
Austin Jacobsen, a therapist at Ellie Mental Health in Mendota Heights, uses VR in systematic desensitization, the standard therapy for phobias and other anxiety disorders. It involves exposing the patient to increasingly intense forms of whatever it is they're afraid of, while the therapist guides them through relaxation techniques such as deep breathing and progressive muscle relaxation.
"You cannot be stressed and relaxed at the same time," Jacobsen explained. So gradually, the patient learns to respond calmly when encountering the stressful thing.
VR can enhance that therapy, providing an experience so realistic that patients feel like they're in the presence of what they fear. It can be used to treat a wide range of phobias in addition to heights: snakes, dentists, airplanes, small spaces, even public speaking (users find themselves standing before an audience).
Jacobsen has even used VR to treat a client with an outsized fear of vomit (scenes feature a puddle of vomit, a person hunched over a toilet).