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Effect of tDCS (A brain stimulation treatment) on the symptom of hearing voices experienced in schizophrenia (a mental disorder)

COGNITIVE, NEUROPHYSIOLOGICAL & NEUROIMAGING CORRELATES OF THE EFFECT OF TRANSCRANIAL DIRECT CURRENT STIMULATION ON AUDITORY VERBAL HALLUCINATIONS IN SCHIZOPHRENIA

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2014/12/005307
Enrollment
24
Registered
2014-12-16
Start date
Unknown
Completion date
Unknown
Last updated
2025-05-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

Intervention1: True Transcranial Current Stimulation: Actual Brain Stimulation Technique. The stimulation level will be set at 2 mA for 20 minutes. The sessions will be conducted twice a day for 5 con

Sponsors

National Institute of Mental Health and Neurosciences
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 1) Diagnosis of schizophrenia / schizophreniform disorder as per DSM-V criteria (Diagnostic and Statistical Manual for Mental Disorders, American Psychiatric Association, 2013); 2) Clinically Significant Auditory Verbal Hallucinations as defined by the Auditory Hallucination Rating Scale (Haddock et al., 1999) items on frequency, duration and disruption each having a score >= 2; 3) Persistence of Auditory Verbal Hallucinations as denoted by daily hallucinations without remission despite adequate treatment with antipsychotic medication at an adequate dosage for at least 3 months (Brunelin et al., 2012a) 4) Age range: 18 â?? 45 years; 5) Both sexes; 6) Right Handedness and 7) Written informed consent.

Exclusion criteria

Exclusion criteria: 1. Features suggestive of psychiatric emergency (for example: suicidal risk, aggression, excitement, catatonia, prolonged nutritional deprivation or any other status requiring intensive clinical care) 2. Pregnancy or post-partum status 3. Any contraindication to tDCS procedure (metal in the head, implanted brain medical devices, local lesion or injury in the scalp / head) 4. Any contraindication for MRI 5. Any co-morbid psychiatric or neurological diagnosis 6. Left/Mixed Handedness

Design outcomes

Primary

MeasureTime frame
1. Degree of reported auditory verbal hallucination 2. Corollary discharge mechanism (An event-related potential paradigm) 3. P3a/MMN complex (An event-related potential paradigm) 4. Fronto-temporo-parietal connectivity (Rest-fMRI)Timepoint: Twice. Before intervention and after intervention

Secondary

MeasureTime frame
CognitionTimepoint: Twice. Before intervention and after intervention

Countries

India

Contacts

Public ContactAnushree Bose

National Institute of Mental Health and Neurosciences

venkat.nimhans@yahoo.com08026995366

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 24, 2026