Universität zu Köln

Pokorny, Lena, Jarczok, Tomasz Antoni and Bender, Stephan (2022). Topography and lateralization of long-latency trigeminal somatosensory evoked potentials. Clin. Neurophysiol., 135. S. 37 - 51. CLARE: ELSEVIER IRELAND LTD. ISSN 1872-8952

Full text not available from this repository.

Abstract

Objective: Long-latency trigeminal somatosensory evoked potentials (SSEPs) have not been sufficiently studied regarding their topography and lateralization. SSEPs are hypothesized to contribute to the evoked potentials after transcranial magnetic stimulation (TMS). This study focused on trigeminal SSEPs with latencies > 100 ms, potentially overlapping with TMS-evoked N100. Methods: In 14 healthy subjects, the trigeminus was electrically stimulated on the left and right forehead, and time-course, topography, and lateralization of trigeminal SSEPs were examined in 64-channel electroencephalogram (EEG). SSEPs were then compared to TMS-evoked potentials when TMS was applied to the left and right dorsolateral prefrontal cortex. Results: Trigeminal stimulation produced a somatosensory N140 with topographic maximum over centroparietal electrodes with larger amplitudes contra- than ipsilaterally to the stimulation. Contralateral potentials after TMS were partly comparable in their topography but differed in latencies. Conclusions: SSEPs generated by electrical stimulation of the trigeminus occurred over somatosensory areas with a contralateral lateralization. Therefore, contralateral potentials after TMS should be interpreted with caution, as they may include somatosensory components. Significance: The topography and lateralization of long-latency trigeminal SSEPs should be considered in future TMS-EEG designs. (C) 2021 International Federation of Clinical Neurophysiology. Published by Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pokorny, Lena UNSPECIFIED UNSPECIFIED UNSPECIFIED Jarczok, Tomasz Antoni UNSPECIFIED UNSPECIFIED UNSPECIFIED Bender, Stephan UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-678817
DOI:	10.1016/j.clinph.2021.11.073
Journal or Publication Title:	Clin. Neurophysiol.
Volume:	135
Page Range:	S. 37 - 51
Date:	2022
Publisher:	ELSEVIER IRELAND LTD
Place of Publication:	CLARE
ISSN:	1872-8952
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TRANSCRANIAL MAGNETIC STIMULATION; DORSOLATERAL PREFRONTAL CORTEX; TMS-EEG; CONNECTIVITY; ASYMMETRY; RESPONSES; FIELDS; LOBE Multiple languages Clinical Neurology; Neurosciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67881