Impact of navigated rhythmic transcranial magnetic stimulation on regaining consciousness in patients after severe brain injury

Background. Rehabilitation of patients with chronic disorders of consciousness is extremely important due to severity of the condition and increasing number of such patients. Disorders of consciousness have led to inability of self-care, need for constant care and complete dependence on outside assistance. Applying noninvasive brain stimulation and rhythmic transcranial magnetic stimulation seems to be perspective methods of rehabilitation. Aim. to evaluate the efficiency of rhythmic transcranial magnetic stimulation of left dorsolateral prefrontal cortex using local navigation in patients with chronic disorders of consciousness. Methods. This prospective study was carried out in patients with chronic disorders of consciousness after severe brain injury. All patients received 10-day treatment with active high-frequency rhythmic transcranial magnetic stimulations of the left dorsolateral prefrontal cortex. Revised coma recovery scale (JFK Coma Recovery Scale-Revised, CRS-R) was used to evaluate the effectiveness of the procedure. Results. After the treatment with rhythmic transcranial magnetic stimulations according to CRS-R 8 out of 12 patients improved their score. The best response was observed in patients in minimally conscious state. There were no cases of adverse events during the treatment. Conclusion. High-frequency rhythmic transcranial magnetic stimulations provide an opportunity to improve level of consciousness in patients after severe brain injury. Using navigation system allows to rule out an inaccuracy in determining the dorsolateral prefrontal cortex. As a result this study proposed the effective and safe protocol for rehabilitation of patients with chronic disorders of consciousness.

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Effects of 10 Hz Repetitive Transcranial Magnetic Stimulation of the Left Dorsolateral Prefrontal Cortex in Disorders of Consciousness

Frontiers in Neurology ◽

10.3389/fneur.2017.00182 ◽

2017 ◽

Vol 8 ◽

Cited By ~ 22

Author(s):

Xiaoyu Xia ◽

Yang Bai ◽

Yangzhong Zhou ◽

Yi Yang ◽

Ruxiang Xu ◽

...

Keyword(s):

Prefrontal Cortex ◽

Transcranial Magnetic Stimulation ◽

Magnetic Stimulation ◽

Dorsolateral Prefrontal Cortex ◽

Repetitive Transcranial Magnetic Stimulation ◽

Disorders Of Consciousness ◽

Dorsolateral Prefrontal ◽

Stimulation Of

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Single-Pulse Transcranial Magnetic Stimulation-Evoked Potential Amplitudes and Latencies in the Motor and Dorsolateral Prefrontal Cortex among Young, Older Healthy Participants, and Schizophrenia Patients

Journal of Personalized Medicine ◽

10.3390/jpm11010054 ◽

2021 ◽

Vol 11 (1) ◽

pp. 54

Author(s):

Yoshihiro Noda ◽

Mera S. Barr ◽

Reza Zomorrodi ◽

Robin F. H. Cash ◽

Pantelis Lioumis ◽

...

Keyword(s):

Prefrontal Cortex ◽

Transcranial Magnetic Stimulation ◽

Magnetic Stimulation ◽

Dorsolateral Prefrontal Cortex ◽

Evoked Potential ◽

Single Pulse ◽

Signal Propagation ◽

Lower Amplitude ◽

Dorsolateral Prefrontal ◽

The Right

Background: The combination of transcranial magnetic stimulation (TMS) with electroencephalography (EEG) allows for non-invasive investigation of cortical response and connectivity in human cortex. This study aimed to examine the amplitudes and latencies of each TMS-evoked potential (TEP) component induced by single-pulse TMS (spTMS) to the left motor (M1) and dorsolateral prefrontal cortex (DLPFC) among healthy young participants (YNG), older participants (OLD), and patients with schizophrenia (SCZ). Methods: We compared the spatiotemporal characteristics of TEPs induced by spTMS among the groups. Results: Compared to YNG, M1-spTMS induced lower amplitudes of N45 and P180 in OLD and a lower amplitude of P180 in SCZ, whereas the DLPFC-spTMS induced a lower N45 in OLD. Further, OLD demonstrated latency delays in P60 after M1-spTMS and in N45-P60 over the right central region after left DLPFC-spTMS, whereas SCZ demonstrated latency delays in N45-P60 over the midline and right central regions after DLPFC-spTMS. Conclusions: These findings suggest that inhibitory and excitatory mechanisms mediating TEPs may be altered in OLD and SCZ. The amplitude and latency changes of TEPs with spTMS may reflect underlying neurophysiological changes in OLD and SCZ, respectively. The spTMS administered to M1 and the DLPFC can probe cortical functions by examining TEPs. Thus, TMS-EEG can be used to study changes in cortical connectivity and signal propagation from healthy to pathological brains.

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Repetitive Transcranial Magnetic Stimulation Improves Depersonalization: A Case Report

CNS Spectrums ◽

10.1017/s1092852900009366 ◽

2004 ◽

Vol 9 (5) ◽

pp. 375-376 ◽

Cited By ~ 12

Author(s):

Alejandro M. Jiménez-Genchi

Keyword(s):

Prefrontal Cortex ◽

Case Report ◽

Transcranial Magnetic Stimulation ◽

Magnetic Stimulation ◽

Dorsolateral Prefrontal Cortex ◽

Repetitive Transcranial Magnetic Stimulation ◽

Treatment Resistant ◽

Depersonalization Disorder ◽

Dorsolateral Prefrontal

AbstractDepersonalization disorder is a poorly understood and treatment-resistant condition. This report describes a patient with depersonalization disorder who underwent six sessions of repetitive transcranial magnetic stimulation on the left dorsolateral prefrontal cortex. Repetitive transcranial magnetic stimulation produced a 28% reduction on depersonalization scores.

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