The human supplementary motor area-proper does not receive direct somatosensory inputs from the periphery: Data from stereotactic depth somatosensory evoked potential recordings

C. Barba, M. Valeriani, D. Restuccia, G. Colicchio, G. Faraca, P. Tonali, F. Mauguière

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Somatosensory evoked potentials to median nerve (MN) stimulation were recorded by stereotactically implanted electrodes in the frontal lobe of two epileptic patients in order to evaluate whether short-latency cortical responses could be generated in the supplementary motor area (SMA)-proper. In both patients two potentials, called P20 and N30 responses, showed a decreasing amplitude from the most superficial to the deepest contacts and were recorded in the white as well in the grey matter of the frontal lobe. Furthermore, no phase reversal of both P20 and N30 potentials was identifiable along electrode trajectories. Our results suggest that short-latency somatosensory evoked responses recorded in the SMA-proper contralateral to MN stimulation are volume conducted from remote cortical generators.

Original languageEnglish
Pages (from-to)161-164
Number of pages4
JournalNeuroscience Letters
Volume344
Issue number3
DOIs
Publication statusPublished - Jul 3 2003

Fingerprint

Somatosensory Evoked Potentials
Median Nerve
Motor Cortex
Frontal Lobe
Implanted Electrodes
Reaction Time
Electrodes
Gray Matter

Keywords

  • Epilepsy
  • Evoked potentials
  • Intracranial recordings
  • Somatosensory evoked potential
  • Supplementary motor area-proper

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

The human supplementary motor area-proper does not receive direct somatosensory inputs from the periphery : Data from stereotactic depth somatosensory evoked potential recordings. / Barba, C.; Valeriani, M.; Restuccia, D.; Colicchio, G.; Faraca, G.; Tonali, P.; Mauguière, F.

In: Neuroscience Letters, Vol. 344, No. 3, 03.07.2003, p. 161-164.

Research output: Contribution to journalArticle

@article{3121f645bb2b4d5ebd7183ad405331de,
title = "The human supplementary motor area-proper does not receive direct somatosensory inputs from the periphery: Data from stereotactic depth somatosensory evoked potential recordings",
abstract = "Somatosensory evoked potentials to median nerve (MN) stimulation were recorded by stereotactically implanted electrodes in the frontal lobe of two epileptic patients in order to evaluate whether short-latency cortical responses could be generated in the supplementary motor area (SMA)-proper. In both patients two potentials, called P20 and N30 responses, showed a decreasing amplitude from the most superficial to the deepest contacts and were recorded in the white as well in the grey matter of the frontal lobe. Furthermore, no phase reversal of both P20 and N30 potentials was identifiable along electrode trajectories. Our results suggest that short-latency somatosensory evoked responses recorded in the SMA-proper contralateral to MN stimulation are volume conducted from remote cortical generators.",
keywords = "Epilepsy, Evoked potentials, Intracranial recordings, Somatosensory evoked potential, Supplementary motor area-proper",
author = "C. Barba and M. Valeriani and D. Restuccia and G. Colicchio and G. Faraca and P. Tonali and F. Maugui{\`e}re",
year = "2003",
month = "7",
day = "3",
doi = "10.1016/S0304-3940(03)00378-1",
language = "English",
volume = "344",
pages = "161--164",
journal = "Neuroscience Letters",
issn = "0304-3940",
publisher = "Elsevier Ireland Ltd",
number = "3",

}

TY - JOUR

T1 - The human supplementary motor area-proper does not receive direct somatosensory inputs from the periphery

T2 - Data from stereotactic depth somatosensory evoked potential recordings

AU - Barba, C.

AU - Valeriani, M.

AU - Restuccia, D.

AU - Colicchio, G.

AU - Faraca, G.

AU - Tonali, P.

AU - Mauguière, F.

PY - 2003/7/3

Y1 - 2003/7/3

N2 - Somatosensory evoked potentials to median nerve (MN) stimulation were recorded by stereotactically implanted electrodes in the frontal lobe of two epileptic patients in order to evaluate whether short-latency cortical responses could be generated in the supplementary motor area (SMA)-proper. In both patients two potentials, called P20 and N30 responses, showed a decreasing amplitude from the most superficial to the deepest contacts and were recorded in the white as well in the grey matter of the frontal lobe. Furthermore, no phase reversal of both P20 and N30 potentials was identifiable along electrode trajectories. Our results suggest that short-latency somatosensory evoked responses recorded in the SMA-proper contralateral to MN stimulation are volume conducted from remote cortical generators.

AB - Somatosensory evoked potentials to median nerve (MN) stimulation were recorded by stereotactically implanted electrodes in the frontal lobe of two epileptic patients in order to evaluate whether short-latency cortical responses could be generated in the supplementary motor area (SMA)-proper. In both patients two potentials, called P20 and N30 responses, showed a decreasing amplitude from the most superficial to the deepest contacts and were recorded in the white as well in the grey matter of the frontal lobe. Furthermore, no phase reversal of both P20 and N30 potentials was identifiable along electrode trajectories. Our results suggest that short-latency somatosensory evoked responses recorded in the SMA-proper contralateral to MN stimulation are volume conducted from remote cortical generators.

KW - Epilepsy

KW - Evoked potentials

KW - Intracranial recordings

KW - Somatosensory evoked potential

KW - Supplementary motor area-proper

UR - http://www.scopus.com/inward/record.url?scp=0037865258&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037865258&partnerID=8YFLogxK

U2 - 10.1016/S0304-3940(03)00378-1

DO - 10.1016/S0304-3940(03)00378-1

M3 - Article

C2 - 12812830

AN - SCOPUS:0037865258

VL - 344

SP - 161

EP - 164

JO - Neuroscience Letters

JF - Neuroscience Letters

SN - 0304-3940

IS - 3

ER -