Use of transcranial direct current stimulation for the treatment of auditory hallucinations of schizophrenia – a systematic review

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Use of transcranial direct current stimulation for the treatment of auditory hallucinations of schizophrenia – a systematic review

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Title: Use of transcranial direct current stimulation for the treatment of auditory hallucinations of schizophrenia – a systematic review
Author: Pondé, Pedro H; de Sena, Eduardo P; Camprodon, Joan A; de Araújo, Arão Nogueira; Neto, Mário F; DiBiasi, Melany; Baptista, Abrahão Fontes; Moura, Lidia MVR; Cosmo, Camila

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Citation: Pondé, Pedro H, Eduardo P de Sena, Joan A Camprodon, Arão Nogueira de Araújo, Mário F Neto, Melany DiBiasi, Abrahão Fontes Baptista, Lidia MVR Moura, and Camila Cosmo. 2017. “Use of transcranial direct current stimulation for the treatment of auditory hallucinations of schizophrenia – a systematic review.” Neuropsychiatric Disease and Treatment 13 (1): 347-355. doi:10.2147/NDT.S122016. http://dx.doi.org/10.2147/NDT.S122016.
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Abstract: Introduction: Auditory hallucinations are defined as experiences of auditory perceptions in the absence of a provoking external stimulus. They are the most prevalent symptoms of schizophrenia with high capacity for chronicity and refractoriness during the course of disease. The transcranial direct current stimulation (tDCS) – a safe, portable, and inexpensive neuromodulation technique – has emerged as a promising treatment for the management of auditory hallucinations. Objective: The aim of this study is to analyze the level of evidence in the literature available for the use of tDCS as a treatment for auditory hallucinations in schizophrenia. Methods: A systematic review was performed, searching in the main electronic databases including the Cochrane Library and MEDLINE/PubMed. The searches were performed by combining descriptors, applying terms of the Medical Subject Headings (MeSH) of Descriptors of Health Sciences and descriptors contractions. PRISMA protocol was used as a guide and the terms used were the clinical outcomes (“Schizophrenia” OR “Auditory Hallucinations” OR “Auditory Verbal Hallucinations” OR “Psychosis”) searched together (“AND”) with interventions (“transcranial Direct Current Stimulation” OR “tDCS” OR “Brain Polarization”). Results: Six randomized controlled trials that evaluated the effects of tDCS on the severity of auditory hallucinations in schizophrenic patients were selected. Analysis of the clinical results of these studies pointed toward incongruence in the information with regard to the therapeutic use of tDCS with a view to reducing the severity of auditory hallucinations in schizophrenia. Only three studies revealed a therapeutic benefit, manifested by reductions in severity and frequency of auditory verbal hallucinations in schizophrenic patients. Conclusion: Although tDCS has shown promising results in reducing the severity of auditory hallucinations in schizophrenic patients, this technique cannot yet be used as a therapeutic alternative due to lack of studies with large sample sizes that portray the positive effects that have been described.
Published Version: doi:10.2147/NDT.S122016
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5295799/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:31731703
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