Premium
Motor‐evoked potentials of facial musculature in dogs
Author(s) -
Estrem Scott A.,
Dvm Siavash Haghighi,
Wertheimer Richard,
Levy Walter J.,
Kendall Mary
Publication year - 1988
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1288/00005537-198809000-00017
Subject(s) - stimulation , motor cortex , transcranial magnetic stimulation , orbicularis oculi muscle , facial nerve , facial muscles , evoked potential , medicine , stimulus (psychology) , anatomy , neuroscience , electromyography , psychology , surgery , eyelid , psychotherapist
Motor responses of limb musculature have been elicited by transcranial brain stimulation using electrical and magnetic stimulation. Recording from muscles innervated by cranial nerves has not previously been reported. A unilateral hemispheric craniotomy was performed in 24 dogs. An electric stimulus was delivered directly to the exposed motor cortex via surface electrodes. Evoked electromyographic responses to motor cortex stimulation were recorded from the contralateral orbicularis oculi and orbicularis oris muscles. Preliminary investigation into the use of magnetic stimulation of the motor cortex is compared to direct electrical cortical stimulation. This study demonstrates the potential for magnetic stimulation in the intraoperative and outpatient clinical evaluation of facial nerve disorders. It appears possible, for the first time using magnetic stimulation, to noninvasively stimulate these nerves proximal to the point of injury and to evaluate more central conduction pathways.