The effect of bilateral transcranial direct current stimulation on early auditory processing in schizophrenia: a preliminary study
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Transcranial direct current stimulation (tDCS) was applied bilaterally over the auditory cortex in 12 schizophrenia patients to modulate early auditory processing. Performance on a tone discrimination task (tone-matching task—TMT) and auditory mismatch negativity were assessed after counterbalanced anodal, cathodal, and sham tDCS. Cathodal stimulation improved TMT performance (p < 0.03) compared to sham condition. Post-hoc analyses revealed a stimulation condition by negative symptom interaction in which greater negative symptoms were associated with a better TMT performance after anodal tDCS.
KeywordsSchizophrenia Transcranial direct current stimulation tDCS Auditory processing Mismatch negativity Tone-matching task
Compliance with ethical standards
This study was funded by the Veterans Administration (VA) Desert Pacific Veterans Integrated Service Network 22 (VISN 22) Mental Illness Research, Education, and Clinical Center (MIRECC).
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