Changes in the perioral muscle responses to cortical TMS induced by decrease of sensory input and electrical stimulation to lower facial region

Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology
N YildizB Uludag

Abstract

To determine the changes in the motor cortex due to repetitive electrical stimulation and cutaneous anesthesia in lower facial region. A total of 11 subjects participated in the study of repetitive electrical stimulation, and 10 other subjects in the study of lower facial anesthesia. Facial nerve root and face associated cortical MEPs by transcranial magnetic stimulation (eight-shaped coil) were recorded from perioral muscles pre- and post- electrical stimulation and lower facial anesthesia. Cheek near to the corner of the mouth was transcutaneously stimulated by bipolar surface electrode giving repetitive electrical shocks at 5 Hz. Five percent lidocain/prilocain local anesthetic cream was applied to left or right lip-cheek region. There was no significant change in perioral MEP responses after 10-30 min of 5 Hz electrical stimulation. We found a significant increase of amplitude in cortical MEP recordings during lower facial anesthesia especially in cases of cortical magnetic stimulations ipsilateral and contralateral to the anaesthetized side and in perioral recordings contralateral to the anaesthetized side. The present study demonstrates that topical anesthesia to the lower facial region leads to cortical modulation and fa...Continue Reading

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Citations

May 19, 2009·Archives of Oral Biology·Malin ErnbergPeter Svensson
Nov 19, 2013·Neuroscience and Biobehavioral Reviews·Luigi Cattaneo, Giovanni Pavesi
Feb 4, 2010·The Journal of Comparative Neurology·Limor Avivi-ArberBarry J Sessle
Nov 6, 2009·Journal of Oral Rehabilitation·Y ZhangP Svensson
May 10, 2011·Archives of Oral Biology·Limor Avivi-ArberBarry J Sessle
Aug 23, 2019·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Francesca GinatempoFranca Deriu

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