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Health

May 29, 2013

Study finds avatar therapy helps silence schizophrenia's voices

LONDON —

People with schizophrenia who didn't respond to medication learned to control hallucinatory voices with the aid of a computer program that used an avatar of their imagined persecutor in a study by British researchers.

The Wellcome Trust, the world's second-largest biomedical charity, said Wednesday it is giving scientists at University College London and King's College London 1.3 million pounds ($2 million) to test the avatar therapy in more patients.

Schizophrenia is a condition that affects thinking, feeling and behavior in about one in every 100 people. A quarter of them aren't helped by drugs. The avatar therapy reduced the frequency and intensity of auditory hallucinations in patients in the British study. It also diminished the disruption to patients' lives and the delusions they developed about the voices. Three patients stopped hearing voices altogether.

"Many of the patients did learn to stand up to their voices and tell them to go away," Julian Leff, an emeritus professor at University College London who led the study published in the British Journal of Psychiatry in February, said in a telephone interview.

The computer software uses gaming technology. One of Leff's colleagues combined FaceGen, three-dimensional facial construction software from Toronto-based Singular Inversions, and animation software from Annosoft of Richardson, Texas, to enable the patients to create a face and voice representing their tormentor. Leff then spoke to them through the modified voice until the patient gained control.

The researchers also recorded the sessions on MP3 players so that the patients could replay them as reminders of their capacity to overcome the bullying voices.

Twenty-six patients between the ages of 14 and 74 who hadn't been helped by anti-psychotic drugs such as AstraZeneca's Seroquel and Bristol-Myers Squibb's Abilify participated in the trial. They received either treatment as usual or as many as seven sessions of therapy lasting as long as 30 minutes.

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