Glossopharyngeal evoked potentials in normal subjects following mechanical stimulation of the anterior faucial pillar

Electroencephalography and Clinical Neurophysiology
M FujiuC R Larson

Abstract

The anterior faucial pillar, which is innervated by the glossopharyngeal nerve, is thought to be important in eliciting the pharyngeal swallow in awake humans. Glossopharyngeal evoked potentials (GPEP), elicited by mechanically stimulating this structure, were recorded from 30 normal adults using standard averaging techniques and a recording montage of 16 scalp electrodes. Ten of the subjects experienced a desire to swallow in response to stimulation. Repeatable responses were recorded from all 30 subjects. The GPEPs recorded from the posterior scalp were W-shaped and consisted of P1, N1, P2, N2 and P3 peaks. Mean latencies of P1, N1 and P2 were 11, 16 and 22 msec, respectively, for both left and right pillar stimulation. In contrast, latencies of N2 and P3 varied significantly between left and right pillar stimulation. Mean latencies of N2 and P3 were 27 and 34 msec for left, and 29 and 35 msec for right pillar stimulation. Topographical maps acquired at peak latencies for P1, N1 and P2 revealed consistent asymmetrical voltage distributions between the two hemispheres; the largest responses were recorded from the hemisphere ipsilateral to the side of stimulation. The scalp topography of N2 and P3 varied between male and female...Continue Reading

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Citations

Oct 5, 2010·Dysphagia·Karen Wheeler-HeglandPaul W Davenport
Sep 18, 1997·The Laryngoscope·S S YinB M Batchelor
Oct 3, 2006·Journal of Neurology, Neurosurgery, and Psychiatry·M L PowerD G Thompson
Apr 12, 2007·Neurological Research·Catriona M SteeleMilos R Popovic
Oct 28, 2016·Annals of the New York Academy of Sciences·Christopher CabibPere Clavé
Jan 31, 2008·Journal of Speech, Language, and Hearing Research : JSLHR·Joanne RobbinsJohn Rosenbek
Aug 5, 2015·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Christy L Ludlow
Aug 30, 2018·Arquivos De Gastroenterologia·Milton Melciades Barbosa Costa
Dec 7, 2007·Arquivos De Gastroenterologia·Maria de Fátima Lago AlviteMilton M B Costa

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