Neuromagnetic localization of N15, the initial cortical response to lip stimulus

Ken Ichi Nagamatsu; Nobukazu Nakasato; Keisaku Hatanaka; Akitake Kanno; Masaki Iwasaki; Takashi Yoshimoto

doi:10.1097/00001756-200101220-00008

Neuromagnetic localization of N15, the initial cortical response to lip stimulus

Ken Ichi Nagamatsu, Nobukazu Nakasato, Keisaku Hatanaka, Akitake Kanno, Masaki Iwasaki, Takashi Yoshimoto

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

33 Citations (Scopus)

Abstract

The initial cortical response of the trigeminal somatosensory evoked magnetic fields was measured for electrical stimulation of the lower lip in eleven subjects. The stimulus frequency was 0.7 Hz and stimulus intensity was nine times sensory threshold. The initial contralateral response was detected in 20 hemispheres at a latency of 14.6 ± 1.3 ms and was named N15m. The equivalent current dipole of N15m was localized at the posterior bank of the central sulcus with anterior-superior orientation, and inferior to the dipole of N20m for median nerve stimulation.

Original language	English
Pages (from-to)	1-5
Number of pages	5
Journal	NeuroReport
Volume	12
Issue number	1
DOIs	https://doi.org/10.1097/00001756-200101220-00008
Publication status	Published - 2001 Jan 22

Keywords

Central sulcus
Lip
Magnetoencephalography
Primary somatosensory cortex
Somatosensory evoked potential
Trigeminal nerve

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10.1097/00001756-200101220-00008

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AU - Nagamatsu, Ken Ichi

AU - Nakasato, Nobukazu

AU - Hatanaka, Keisaku

AU - Kanno, Akitake

AU - Iwasaki, Masaki

AU - Yoshimoto, Takashi

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N2 - The initial cortical response of the trigeminal somatosensory evoked magnetic fields was measured for electrical stimulation of the lower lip in eleven subjects. The stimulus frequency was 0.7 Hz and stimulus intensity was nine times sensory threshold. The initial contralateral response was detected in 20 hemispheres at a latency of 14.6 ± 1.3 ms and was named N15m. The equivalent current dipole of N15m was localized at the posterior bank of the central sulcus with anterior-superior orientation, and inferior to the dipole of N20m for median nerve stimulation.

AB - The initial cortical response of the trigeminal somatosensory evoked magnetic fields was measured for electrical stimulation of the lower lip in eleven subjects. The stimulus frequency was 0.7 Hz and stimulus intensity was nine times sensory threshold. The initial contralateral response was detected in 20 hemispheres at a latency of 14.6 ± 1.3 ms and was named N15m. The equivalent current dipole of N15m was localized at the posterior bank of the central sulcus with anterior-superior orientation, and inferior to the dipole of N20m for median nerve stimulation.

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KW - Lip

KW - Magnetoencephalography

KW - Primary somatosensory cortex

KW - Somatosensory evoked potential

KW - Trigeminal nerve

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Neuromagnetic localization of N15, the initial cortical response to lip stimulus

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