4.5 Review

Evidence of Neuroplastic Changes after Transcranial Magnetic, Electric, and Deep Brain Stimulation

期刊

BRAIN SCIENCES
卷 12, 期 7, 页码 -

出版社

MDPI
DOI: 10.3390/brainsci12070929

关键词

deep brain stimulation (DBS); transcranial electric stimulation (tES); transcranial magnetic stimulation (TMS); neuroplasticity; electroencephalography (EEG)

资金

  1. Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy [EXC 2177/1, 390895286]
  2. DFG Graduate School [2783]
  3. University of Oldenburg

向作者/读者索取更多资源

This review discusses the methods of exciting or inhibiting neurons in the human brain through electric and magnetic stimulation. Deep brain stimulation, transcranial magnetic stimulation, and transcranial electric stimulation are the main techniques explored. The review summarizes the effects of these stimulations on neuroplastic changes and suggests possible mechanisms and future directions.
Electric and magnetic stimulation of the human brain can be used to excite or inhibit neurons. Numerous methods have been designed over the years for this purpose with various advantages and disadvantages that are the topic of this review. Deep brain stimulation (DBS) is the most direct and focal application of electric impulses to brain tissue. Electrodes are placed in the brain in order to modulate neural activity and to correct parameters of pathological oscillation in brain circuits such as their amplitude or frequency. Transcranial magnetic stimulation (TMS) is a non-invasive alternative with the stimulator generating a magnetic field in a coil over the scalp that induces an electric field in the brain which, in turn, interacts with ongoing brain activity. Depending upon stimulation parameters, excitation and inhibition can be achieved. Transcranial electric stimulation (tES) applies electric fields to the scalp that spread along the skull in order to reach the brain, thus, limiting current strength to avoid skin sensations and cranial muscle pain. Therefore, tES can only modulate brain activity and is considered subthreshold, i.e., it does not directly elicit neuronal action potentials. In this review, we collect hints for neuroplastic changes such as modulation of behavior, the electric activity of the brain, or the evolution of clinical signs and symptoms in response to stimulation. Possible mechanisms are discussed, and future paradigms are suggested.

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