Lower brain-stem origin of the median nerve N18 potential

Henry G. Raroque; Hunt Batjer; Charles White; William L. Bell; Gary Bowman; Ralph Greenlee

doi:10.1016/0013-4694(94)90009-4

Lower brain-stem origin of the median nerve N18 potential

Henry G. Raroque, Hunt Batjer, Charles White, William L. Bell, Gary Bowman, Ralph Greenlee

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

A patient undergoing intraoperative median nerve somatosensory evoked potential (MSEP) and brain-stem auditory evoked response (BAER) monitoring showed changes during basilar artery aneurysm clipping. There was loss of the BAER wave V, with preservation of waves I and III. Simultaneously, there also was loss of the MSEP N20 potential, with preservation of the N18, N13 and Erb's point potentials. The patient died and autopsy showed an infarct involving the whole rostro-caudal extent of the pontine tegmentum. This combination of electrophysiologic and pathologic findings may help answer questions regarding the exact generators of different MSEP potentials. In particular, it implies that medullary structures can generate the N18 potential.

Original language	English (US)
Pages (from-to)	170-172
Number of pages	3
Journal	Electroencephalography and Clinical Neurophysiology
Volume	90
Issue number	2
DOIs	https://doi.org/10.1016/0013-4694(94)90009-4
State	Published - Feb 1994

Keywords

Evoked potential
N18 potential
Somatosensory

ASJC Scopus subject areas

General Neuroscience
Clinical Neurology

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10.1016/0013-4694(94)90009-4

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title = "Lower brain-stem origin of the median nerve N18 potential",

abstract = "A patient undergoing intraoperative median nerve somatosensory evoked potential (MSEP) and brain-stem auditory evoked response (BAER) monitoring showed changes during basilar artery aneurysm clipping. There was loss of the BAER wave V, with preservation of waves I and III. Simultaneously, there also was loss of the MSEP N20 potential, with preservation of the N18, N13 and Erb's point potentials. The patient died and autopsy showed an infarct involving the whole rostro-caudal extent of the pontine tegmentum. This combination of electrophysiologic and pathologic findings may help answer questions regarding the exact generators of different MSEP potentials. In particular, it implies that medullary structures can generate the N18 potential.",

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T1 - Lower brain-stem origin of the median nerve N18 potential

AU - Raroque, Henry G.

AU - Batjer, Hunt

AU - White, Charles

AU - Bell, William L.

AU - Bowman, Gary

AU - Greenlee, Ralph

PY - 1994/2

Y1 - 1994/2

N2 - A patient undergoing intraoperative median nerve somatosensory evoked potential (MSEP) and brain-stem auditory evoked response (BAER) monitoring showed changes during basilar artery aneurysm clipping. There was loss of the BAER wave V, with preservation of waves I and III. Simultaneously, there also was loss of the MSEP N20 potential, with preservation of the N18, N13 and Erb's point potentials. The patient died and autopsy showed an infarct involving the whole rostro-caudal extent of the pontine tegmentum. This combination of electrophysiologic and pathologic findings may help answer questions regarding the exact generators of different MSEP potentials. In particular, it implies that medullary structures can generate the N18 potential.

AB - A patient undergoing intraoperative median nerve somatosensory evoked potential (MSEP) and brain-stem auditory evoked response (BAER) monitoring showed changes during basilar artery aneurysm clipping. There was loss of the BAER wave V, with preservation of waves I and III. Simultaneously, there also was loss of the MSEP N20 potential, with preservation of the N18, N13 and Erb's point potentials. The patient died and autopsy showed an infarct involving the whole rostro-caudal extent of the pontine tegmentum. This combination of electrophysiologic and pathologic findings may help answer questions regarding the exact generators of different MSEP potentials. In particular, it implies that medullary structures can generate the N18 potential.

KW - Evoked potential

KW - N18 potential

KW - Somatosensory

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Lower brain-stem origin of the median nerve N18 potential

Abstract

Keywords

ASJC Scopus subject areas

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