Computer-assisted therapy for medication-resistant auditory hallucinations: proof-of-concept study

Area of Science:

• Psychiatry and Mental Health
• Digital Therapeutics
• Schizophrenia Research

Background:

• A significant portion of schizophrenia patients exhibit poor response to antipsychotic medications, persisting with persecutory auditory hallucinations.
• Patients who can engage in dialogue with their auditory hallucinations report a greater sense of personal control.

Purpose of the Study:

• To develop and evaluate a computerized system enabling patients to create and interact with a virtual avatar of their persecutor.
• To assess the efficacy of avatar therapy in facilitating dialogue and yielding control from the avatar to the patient, guided by a therapist.

Main Methods:

• A randomized, single-blind, partial crossover trial was conducted, comparing avatar therapy with treatment as usual (TAU).
• Key outcome measures included the Psychotic Symptom Rating Scale (PSYRATS) for hallucinations, and the Omnipotence and Malevolence subscales of the Revised Beliefs About Voices Questionnaire (BAVQ-R).
• The Calgary Depression Scale (CDS) was also used to assess depression.

Main Results:

• The avatar therapy group demonstrated significant reductions in auditory hallucinations (PSYRATS score, P = 0.003) and in the perceived omnipotence and malevolence of voices (BAVQ-R score, P = 0.004).
• No significant changes in depression scores (CDS) were observed.
• The effect size for avatar therapy was calculated at 0.8.

Conclusions:

• Avatar therapy shows promise as an effective treatment for medication-resistant auditory hallucinations in schizophrenia.
• Further research with larger sample sizes is recommended to validate these findings before widespread clinical implementation.