March 20, 2005, Updated September 14, 2012

Most people have never witnessed a terror attack. But the graphic depiction of a suicide bus bombing on the computer screen that Prof. Patrice (Tamar) Weiss is displaying seems vividly real.

Watching it – in three dimensions and full sound while wearing a head-mounted display helmet – may help hundreds of Israelis who have witnessed real terror attacks overcome post-traumatic stress disorder (PTSD), and is the basis of a new therapy for treating particularly resistant cases of PTSD.

The treatment is just one of dozens of novel applications of virtual reality (VR) technology which were demonstrated recently at the University of Haifa during the Third VR Symposium.

Weiss, the person who brought together many of the world’s leading VR wizards – and who is herself involved in several cutting edge VR applications, is a strictly observant Israeli who lives in the ultra-Orthodox neighborhood of B’nai Brak.

“It’s not exactly normal,” admits Weiss to ISRAEL21c, laughing at the contrast between her traditional way of life and the ‘Brave New World’ that characterizes her professional pursuits.

But Weiss sees no contradiction between the two. “I have always been interested in different technologies and my goal has always been to help people,” says the researcher, whose library has volumes of Psalms and kinesiology textbooks side by side.

An occupational therapist by training, Weiss grew up in Canada and taught at McGill University in Montreal for many years, before immigrating to Israel in 1991 with her Israel-born husband. For the last four years she has been a researcher and lecturer at the University of Haifa, and a member of its newly-established Laboratory for Innovations in Rehabilitation Technology.

Weiss’s interest in VR was piqued when she read an article by one of the pioneers in the field, Prof. Albert ‘Skip’ Rizzo of the University of Southern California, nearly a decade ago. That ultimately led to a close collaboration with Rizzo, who also attended this month’s symposium.

What interests her about the field?

“Look at this,” says Weiss, showing a videotape of a woman with a spinal cord injury doing traditional physiotherapy. The therapist hands her a plastic ring which she must grasp without losing her balance – then another ring, and another, and another. “Let’s face it. It’s very static and very boring.”

Now she shows a videotape of another patient who is also learning to balance himself – only he is watching himself on a giant screen, against a breath-taking mountain backdrop, swatting at balls in the sky. Every ball he hits turns into a colorful bird. The scene is virtual, but the man’s movements – he is leaping and swatting with increasing determination – are very real.

“It’s interesting and motivating,” explains Weiss. “I have yet to meet a patient – of any age – who didn’t like it. So it’s very effective.” (In a newer version, she notes excitedly, patients will wear a glove which vibrates whenever they make contact with a virtual ball – further increasing the sense of realness.)

The symposium Weiss organized, which brought leading VR experts from the US, Canada, Europe, Japan and Israel, to Haifa showed the dizzying range of new VR technologies dedicated to health and rehabilitation – from a robotic dog, who can be a reliable companion for the elderly – “no need to feed him or take him for walks,” noted the researcher who demonstrated the small, black, yelping Sony invention – to 3D interactive games that could some day be used for early diagnoses of Alzheimer’s disease, treatment of attention deficit disorder, and rehabilitation of patients who have suffered central nervous system injuries.

“Virtual reality has completely revolutionized the field of occupational therapy,” says Weiss, who is personally involved in several innovative VR projects, including the simulated bus bombing program designed to treat Israelis suffering from severe post-traumatic stress.

That program – developed together with Dr. Naomi Josman, Prof.Eli Somer and Ayelet Reisberg, all of the University of Haifa, as well as with American researchers – is designed to expose patients in a controlled manner to the traumatic incident which they are often unable to remember, but which has a powerful and debilitating effect on their lives.

The realistic rendering of the bus bombing triggers the patient’s memories – the first vital step on the path to overcoming trauma. (The simulation does not include all the gruesome details of the attack, but rather just enough to help the patient recall what happened.)

It was Josman who first came up with the idea of using such a treatment in Israel. She was attending a conference in the United States when she saw how University of Washington Prof. Hunter Hoffman had applied VR to successfully treat Americans suffering from PTSD following the 9/11 attack on the Twin Towers.

Similar programs have also been used recently to help American veterans traumatized by their tour of duty in Iraq, and even Vietnam veterans for whom no other treatment has proven effective.

Through close collaboration with Hoffman, the U. of Haifa team developed an Israeli version of the program which is now being used to treat the first few patients.

“If our pilot study is effective, we will launch a full-scale clinical trial,” says Weiss, “and hopefully we will be able to provide a solution for those PTSD patients who have been resistant to more traditional cognitive therapy.”

In another application of VR technology, Weiss and U. of Haifa colleagues have developed a program to help stroke victims re-learn the basic skills required to shop on their own. The patient composes a grocery list and makes his or her way through a ‘virtual supermarket,’ seeking the right products, pulling them off the shelves and into a shopping cart, while announcements of sales are broadcast on the loudspeaker system.

“It’s the first such program designed to improve both cognitive and motor skills of stroke victims,” she notes.

Last week, the American Occupational Therapy Foundation (AOTF) invited Weiss to join its Academy of Research, the highest scholarly honor that the AOTF confers.

“Your work clearly helps to move the profession ahead, and demonstrates powerful evidence of the importance of assistive technology in helping persons with disabilities participate in the occupations of their choice, while improving the quality of their lives,” the AOTF wrote in its letter to Weiss.

For Weiss, virtual reality is not only the focus of research, but a way of life – at least in her work. She communicates with her colleagues around the world by tele-conference and, of course, email – and notes that she has never even met her close collaborator Hoffman even though they have been communicating several times a week for years.

She also taught an entire university course last semester – without ever attending a lecture hall. Instead, she sat in the comfort of her B?nai Brak home, wearing a headset and microphone to deliver a weekly videoconferenced lesson on assistance technology to students who sat in their own homes.

“They could see a video of me, and whenever a student wanted to speak I would see the icon of a hand being raised. We even had guest lecturers from abroad. The students really appreciated not having to come to the university late at night for the course,” says Weiss, who was pleased to be able to – once again -harness technology to help make people’s lives a little easier.

“I believe in practicing what I preach.”

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