Effect of tactile interference stimulation of the ear in human primary somatosensory cortex: A magnetoencephalographic study

T. Nihashi, R. Kakigi, M. Hoshiyama, K. Miki, Y. Kajita, J. Yoshida, Hiroshi Yatsuya

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Objective: To confirm the somatotopic representation of the ear in the primary somatosensory cortex (SI), we studied the tactile interference effects on somatosensory evoked magnetic fields (SEFs) following stimulation of the ear (Helix, Lobulus and Tragus). Methods: We applied tactile interference stimulation to the neck or face area continuously and concurrently while a time-locked electrical stimulation was applied to the ear. If the amplitude would be reduced by the interference, this would indicate that the cortical representation for both the time-locked electrical stimulation and the continuous interference stimulation overlapped. A two or 3-source model, Source 1 in the neck area of SI, Source 2 in the face area of SI, and Source 3 in the secondary somatosensory cortex (SII), was found to be the most appropriate by brain electric source analysis (BESA). Results: Amplitudes of Sources 1 and 2 in most interference conditions were decreased. Source 1 following stimulation of all 3 sites was significantly reduced when the interference was applied to the neck area. Source 2 following stimulation of all 3 sites was significantly reduced when the interference was applied to the face area. Conclusions: These findings showed that the interference effect was found in both the neck and face areas of SI following the ear stimulation. Significance: The representation of the ear in SI might be located in both the neck and face areas.

Original languageEnglish
Pages (from-to)1866-1878
Number of pages13
JournalClinical Neurophysiology
Volume114
Issue number10
DOIs
Publication statusPublished - 01-10-2003
Externally publishedYes

Fingerprint

Somatosensory Cortex
Touch
Ear
Neck
Electric Stimulation
Magnetic Fields
Brain

All Science Journal Classification (ASJC) codes

  • Sensory Systems
  • Neurology
  • Clinical Neurology
  • Physiology (medical)

Cite this

Nihashi, T. ; Kakigi, R. ; Hoshiyama, M. ; Miki, K. ; Kajita, Y. ; Yoshida, J. ; Yatsuya, Hiroshi. / Effect of tactile interference stimulation of the ear in human primary somatosensory cortex : A magnetoencephalographic study. In: Clinical Neurophysiology. 2003 ; Vol. 114, No. 10. pp. 1866-1878.
@article{01f2975f918c4727941bf2b5137912c4,
title = "Effect of tactile interference stimulation of the ear in human primary somatosensory cortex: A magnetoencephalographic study",
abstract = "Objective: To confirm the somatotopic representation of the ear in the primary somatosensory cortex (SI), we studied the tactile interference effects on somatosensory evoked magnetic fields (SEFs) following stimulation of the ear (Helix, Lobulus and Tragus). Methods: We applied tactile interference stimulation to the neck or face area continuously and concurrently while a time-locked electrical stimulation was applied to the ear. If the amplitude would be reduced by the interference, this would indicate that the cortical representation for both the time-locked electrical stimulation and the continuous interference stimulation overlapped. A two or 3-source model, Source 1 in the neck area of SI, Source 2 in the face area of SI, and Source 3 in the secondary somatosensory cortex (SII), was found to be the most appropriate by brain electric source analysis (BESA). Results: Amplitudes of Sources 1 and 2 in most interference conditions were decreased. Source 1 following stimulation of all 3 sites was significantly reduced when the interference was applied to the neck area. Source 2 following stimulation of all 3 sites was significantly reduced when the interference was applied to the face area. Conclusions: These findings showed that the interference effect was found in both the neck and face areas of SI following the ear stimulation. Significance: The representation of the ear in SI might be located in both the neck and face areas.",
author = "T. Nihashi and R. Kakigi and M. Hoshiyama and K. Miki and Y. Kajita and J. Yoshida and Hiroshi Yatsuya",
year = "2003",
month = "10",
day = "1",
doi = "10.1016/S1388-2457(03)00175-5",
language = "English",
volume = "114",
pages = "1866--1878",
journal = "Clinical Neurophysiology",
issn = "1388-2457",
publisher = "Elsevier Ireland Ltd",
number = "10",

}

Effect of tactile interference stimulation of the ear in human primary somatosensory cortex : A magnetoencephalographic study. / Nihashi, T.; Kakigi, R.; Hoshiyama, M.; Miki, K.; Kajita, Y.; Yoshida, J.; Yatsuya, Hiroshi.

In: Clinical Neurophysiology, Vol. 114, No. 10, 01.10.2003, p. 1866-1878.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of tactile interference stimulation of the ear in human primary somatosensory cortex

T2 - A magnetoencephalographic study

AU - Nihashi, T.

AU - Kakigi, R.

AU - Hoshiyama, M.

AU - Miki, K.

AU - Kajita, Y.

AU - Yoshida, J.

AU - Yatsuya, Hiroshi

PY - 2003/10/1

Y1 - 2003/10/1

N2 - Objective: To confirm the somatotopic representation of the ear in the primary somatosensory cortex (SI), we studied the tactile interference effects on somatosensory evoked magnetic fields (SEFs) following stimulation of the ear (Helix, Lobulus and Tragus). Methods: We applied tactile interference stimulation to the neck or face area continuously and concurrently while a time-locked electrical stimulation was applied to the ear. If the amplitude would be reduced by the interference, this would indicate that the cortical representation for both the time-locked electrical stimulation and the continuous interference stimulation overlapped. A two or 3-source model, Source 1 in the neck area of SI, Source 2 in the face area of SI, and Source 3 in the secondary somatosensory cortex (SII), was found to be the most appropriate by brain electric source analysis (BESA). Results: Amplitudes of Sources 1 and 2 in most interference conditions were decreased. Source 1 following stimulation of all 3 sites was significantly reduced when the interference was applied to the neck area. Source 2 following stimulation of all 3 sites was significantly reduced when the interference was applied to the face area. Conclusions: These findings showed that the interference effect was found in both the neck and face areas of SI following the ear stimulation. Significance: The representation of the ear in SI might be located in both the neck and face areas.

AB - Objective: To confirm the somatotopic representation of the ear in the primary somatosensory cortex (SI), we studied the tactile interference effects on somatosensory evoked magnetic fields (SEFs) following stimulation of the ear (Helix, Lobulus and Tragus). Methods: We applied tactile interference stimulation to the neck or face area continuously and concurrently while a time-locked electrical stimulation was applied to the ear. If the amplitude would be reduced by the interference, this would indicate that the cortical representation for both the time-locked electrical stimulation and the continuous interference stimulation overlapped. A two or 3-source model, Source 1 in the neck area of SI, Source 2 in the face area of SI, and Source 3 in the secondary somatosensory cortex (SII), was found to be the most appropriate by brain electric source analysis (BESA). Results: Amplitudes of Sources 1 and 2 in most interference conditions were decreased. Source 1 following stimulation of all 3 sites was significantly reduced when the interference was applied to the neck area. Source 2 following stimulation of all 3 sites was significantly reduced when the interference was applied to the face area. Conclusions: These findings showed that the interference effect was found in both the neck and face areas of SI following the ear stimulation. Significance: The representation of the ear in SI might be located in both the neck and face areas.

UR - http://www.scopus.com/inward/record.url?scp=0642280645&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0642280645&partnerID=8YFLogxK

U2 - 10.1016/S1388-2457(03)00175-5

DO - 10.1016/S1388-2457(03)00175-5

M3 - Article

C2 - 14499748

AN - SCOPUS:0642280645

VL - 114

SP - 1866

EP - 1878

JO - Clinical Neurophysiology

JF - Clinical Neurophysiology

SN - 1388-2457

IS - 10

ER -