BACKGROUND:Repetitive transcranial magnetic stimulation (rTMS) is increasingly being investigated as a potential treatment for a number of psychiatric disorders, including schizophrenia. Previous rTMS studies have targeted the left-side prefrontal cortex (PFC) in the treatment of negative symptoms, with inconsistent findings. Some imaging evidence suggests right-sided or bilateral PFC involvement in negative symptoms, areas yet to be investigated for rTMS treatment. The study therefore aimed to assess the efficacy of bilateral high-frequency rTMS in the treatment of negative symptoms. METHODS: A 2-arm double-blind randomized controlled trial was conducted with 20 patients with a diagnosis of schizophrenia or schizoaffective disorder, and moderate-to-severe treatment-resistant negative symptoms. Participants received a 3-week course of high-frequency bilateral rTMS or sham. Twenty trains (5 seconds duration) of 10 Hz rTMS at 110% of the RMT were administered to each PFC daily, 5 days a week. RESULTS: No significant group or time differences in the Scale for the Assessment of Negative Symptoms (SANS) scores or cognitive outcomes were evident. However, a trend for greater reduction in scores on the autistic preoccupation scale of the Positive and Negative Symptom Scale for the active group compared to the sham group was observed (P = .05). CONCLUSIONS: No substantial benefit of high-frequency bilateral rTMS was seen in the treatment of the negative symptoms of schizophrenia. Further research is required to explore whether rTMS may have benefits specific to particular cognitive or symptom domains.
RCT Entities:
BACKGROUND: Repetitive transcranial magnetic stimulation (rTMS) is increasingly being investigated as a potential treatment for a number of psychiatric disorders, including schizophrenia. Previous rTMS studies have targeted the left-side prefrontal cortex (PFC) in the treatment of negative symptoms, with inconsistent findings. Some imaging evidence suggests right-sided or bilateral PFC involvement in negative symptoms, areas yet to be investigated for rTMS treatment. The study therefore aimed to assess the efficacy of bilateral high-frequency rTMS in the treatment of negative symptoms. METHODS: A 2-arm double-blind randomized controlled trial was conducted with 20 patients with a diagnosis of schizophrenia or schizoaffective disorder, and moderate-to-severe treatment-resistant negative symptoms. Participants received a 3-week course of high-frequency bilateral rTMS or sham. Twenty trains (5 seconds duration) of 10 Hz rTMS at 110% of the RMT were administered to each PFC daily, 5 days a week. RESULTS: No significant group or time differences in the Scale for the Assessment of Negative Symptoms (SANS) scores or cognitive outcomes were evident. However, a trend for greater reduction in scores on the autistic preoccupation scale of the Positive and Negative Symptom Scale for the active group compared to the sham group was observed (P = .05). CONCLUSIONS: No substantial benefit of high-frequency bilateral rTMS was seen in the treatment of the negative symptoms of schizophrenia. Further research is required to explore whether rTMS may have benefits specific to particular cognitive or symptom domains.
Authors: Stefan M Goetz; Bruce Luber; Sarah H Lisanby; David L K Murphy; I Cassie Kozyrkov; Warren M Grill; Angel V Peterchev Journal: Brain Stimul Date: 2015-09-01 Impact factor: 8.955
Authors: Daniel M Blumberger; Jerome J Maller; Lauren Thomson; Benoit H Mulsant; Tarek K Rajji; Missy Maher; Patrick E Brown; Jonathan Downar; Fidel Vila-Rodriguez; Paul B Fitzgerald; Zafiris J Daskalakis Journal: J Psychiatry Neurosci Date: 2016-06 Impact factor: 6.186
Authors: Mei Hong Xiu; Heng Yong Guan; Jian Min Zhao; Ke Qiang Wang; Yan Fen Pan; Xiu Ru Su; Yu Hong Wang; Jin Ming Guo; Long Jiang; Hong Yu Liu; Shi Guang Sun; Hao Ran Wu; Han Song Geng; Xiao Wen Liu; Hui Jing Yu; Bao Chun Wei; Xi Po Li; Tammy Trinh; Shu Ping Tan; Xiang Yang Zhang Journal: Schizophr Bull Date: 2020-03-17 Impact factor: 9.306