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Motor Evoked Potentials 

Motor Evoked Potentials
Motor Evoked Potentials

Jun Kimura

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date: 28 October 2021

Transcranial electrical stimulationhas provided important insights into motor physiology and pathophysiology, although discomfort associated with scalp stimulation limits its practical application. Painless transcranial magnetic stimulation has generally replaced electric shock, gaining wide acceptance in the clinical study. A specially constructed coil can activate the motor cortex and pyramidal decussation, but not descending motor tracts within the spinal cord. In addition, magnetic stimulation can also excite the motor roots in the region of the intervertebral foramina as well as deep seated nerves and plexuses. This chapter describes the technique to elicit motor evoked potentials and their application for studies of the peripheral and central nervous system. Related areas of interest includecentral conduction time, triple stimulation techniques, modulation of cortical excitability, and the conditioning and testing paradigm.

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