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Technique and Considerations in the Use of 4x1 Ring High-definition Transcranial Direct Current Stimulation HD-tDCS
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Breaking the Negative Symptom Barrier: A Novel Neuromodulation Strategy Using HD-tDCS Primed iTBS in Schizophrenia
Ritvik Gupta1, Avinash Sharma2, Nishant Goyal2
1Institute of Mental Health, University of Health Sciences, Rohtak, Haryana, India.
The Journal of ECT
|January 23, 2026
Summary
Combining high-definition transcranial direct current stimulation (HD-tDCS) with intermittent theta burst stimulation (iTBS) shows promise for treating negative symptoms in schizophrenia. This neuromodulation approach was found to be safe and effective in reducing symptom severity.
Area of Science:
- Neuroscience
- Psychiatry
- Neuromodulation
Background:
- Negative symptoms in schizophrenia lead to long-term disability.
- Current treatments for negative symptoms are insufficient.
- Neuromodulation offers a promising noninvasive treatment avenue.
Purpose of the Study:
- To evaluate the efficacy and safety of combining HD-tDCS and iTBS for schizophrenia negative symptoms.
- To assess the impact of this combined neuromodulation on symptom severity and functioning.
Main Methods:
- A randomized, double-blind, sham-controlled trial was conducted.
- 40 schizophrenia inpatients with negative symptoms received active or sham HD-tDCS followed by iTBS.
- Treatment was administered twice daily for 2 weeks, with assessments at baseline, 2, and 4 weeks.
Main Results:
- Both active and sham groups improved, but the active group showed significantly greater reduction in negative symptoms.
- Improvements were noted in attention, cognition, and depressive domains.
- The combined treatment was well-tolerated with mild, transient side effects.
Conclusions:
- Priming iTBS with HD-tDCS is a safe and potentially effective strategy for negative symptoms in schizophrenia.
- This neuromodulation technique offers a new therapeutic option for this patient population.
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