Transcranial direct current stimulation enhances mu rhythm desynchronization during motor imagery that depends on handedness

Shoko Kasuga, Yayoi Matsushika, Yuko Kasashima-Shindo, Daiki Kamatani, Toshiyuki Fujiwara, Meigen Liu, Junichi Ushiba

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Transcranial direct current stimulation (tDCS) can modulate the amplitude of event-related desynchronization (ERD) that appears on the electroencephalogram (EEG) during motor imagery. To study the effect of handedness on the modulating effect of tDCS, we compared the difference in tDCS-boosted ERD during dominant and non-dominant hand motor imagery. EEGs were recorded over the left sensorimotor cortex of seven healthy right-handed volunteers, and we measured ERD induced either by dominant or non-dominant hand motor imagery. Ten minutes of anodal tDCS was then used to increase the cortical excitability of the contralateral primary motor cortex (M1), and ERD was measured again. With anodal tDCS, we observed only a small increase in ERD during non-dominant hand motor imagery, whereas the same stimulation induced a prominent increase in ERD during dominant hand motor imagery. This trend was most obvious in the participants who used their dominant hand more frequently. Although our study is preliminary because of a small sample size, these results suggest that the increase in ERD by applying anodal tDCS was stronger on the dominant side than on the non-dominant side. The background excitability of M1 may determine the strength of the effect of anodal tDCS on ERD by hand motor imagery.

Original languageEnglish
Pages (from-to)453-468
Number of pages16
JournalLaterality
Volume20
Issue number4
DOIs
Publication statusPublished - 2015 Jul 4

Fingerprint

Functional Laterality
Imagery (Psychotherapy)
Hand
Electroencephalography
Motor Cortex
Transcranial Direct Current Stimulation
Motor Imagery
Handedness
Stimulation
Rhythm
Sample Size
Volunteers

Keywords

  • Electroencephalogram
  • Event-related desynchronization
  • Handedness
  • Motor cortex
  • Transcranial direct current stimulation

ASJC Scopus subject areas

  • Psychology(all)
  • Arts and Humanities (miscellaneous)

Cite this

Transcranial direct current stimulation enhances mu rhythm desynchronization during motor imagery that depends on handedness. / Kasuga, Shoko; Matsushika, Yayoi; Kasashima-Shindo, Yuko; Kamatani, Daiki; Fujiwara, Toshiyuki; Liu, Meigen; Ushiba, Junichi.

In: Laterality, Vol. 20, No. 4, 04.07.2015, p. 453-468.

Research output: Contribution to journalArticle

Kasuga, Shoko ; Matsushika, Yayoi ; Kasashima-Shindo, Yuko ; Kamatani, Daiki ; Fujiwara, Toshiyuki ; Liu, Meigen ; Ushiba, Junichi. / Transcranial direct current stimulation enhances mu rhythm desynchronization during motor imagery that depends on handedness. In: Laterality. 2015 ; Vol. 20, No. 4. pp. 453-468.
@article{ea306c79da96450099ffd476ec6b3f9e,
title = "Transcranial direct current stimulation enhances mu rhythm desynchronization during motor imagery that depends on handedness",
abstract = "Transcranial direct current stimulation (tDCS) can modulate the amplitude of event-related desynchronization (ERD) that appears on the electroencephalogram (EEG) during motor imagery. To study the effect of handedness on the modulating effect of tDCS, we compared the difference in tDCS-boosted ERD during dominant and non-dominant hand motor imagery. EEGs were recorded over the left sensorimotor cortex of seven healthy right-handed volunteers, and we measured ERD induced either by dominant or non-dominant hand motor imagery. Ten minutes of anodal tDCS was then used to increase the cortical excitability of the contralateral primary motor cortex (M1), and ERD was measured again. With anodal tDCS, we observed only a small increase in ERD during non-dominant hand motor imagery, whereas the same stimulation induced a prominent increase in ERD during dominant hand motor imagery. This trend was most obvious in the participants who used their dominant hand more frequently. Although our study is preliminary because of a small sample size, these results suggest that the increase in ERD by applying anodal tDCS was stronger on the dominant side than on the non-dominant side. The background excitability of M1 may determine the strength of the effect of anodal tDCS on ERD by hand motor imagery.",
keywords = "Electroencephalogram, Event-related desynchronization, Handedness, Motor cortex, Transcranial direct current stimulation",
author = "Shoko Kasuga and Yayoi Matsushika and Yuko Kasashima-Shindo and Daiki Kamatani and Toshiyuki Fujiwara and Meigen Liu and Junichi Ushiba",
year = "2015",
month = "7",
day = "4",
doi = "10.1080/1357650X.2014.998679",
language = "English",
volume = "20",
pages = "453--468",
journal = "Laterality: Asymmetries of Body, Brain and Cognition",
issn = "1357-650X",
publisher = "Psychology Press Ltd",
number = "4",

}

TY - JOUR

T1 - Transcranial direct current stimulation enhances mu rhythm desynchronization during motor imagery that depends on handedness

AU - Kasuga, Shoko

AU - Matsushika, Yayoi

AU - Kasashima-Shindo, Yuko

AU - Kamatani, Daiki

AU - Fujiwara, Toshiyuki

AU - Liu, Meigen

AU - Ushiba, Junichi

PY - 2015/7/4

Y1 - 2015/7/4

N2 - Transcranial direct current stimulation (tDCS) can modulate the amplitude of event-related desynchronization (ERD) that appears on the electroencephalogram (EEG) during motor imagery. To study the effect of handedness on the modulating effect of tDCS, we compared the difference in tDCS-boosted ERD during dominant and non-dominant hand motor imagery. EEGs were recorded over the left sensorimotor cortex of seven healthy right-handed volunteers, and we measured ERD induced either by dominant or non-dominant hand motor imagery. Ten minutes of anodal tDCS was then used to increase the cortical excitability of the contralateral primary motor cortex (M1), and ERD was measured again. With anodal tDCS, we observed only a small increase in ERD during non-dominant hand motor imagery, whereas the same stimulation induced a prominent increase in ERD during dominant hand motor imagery. This trend was most obvious in the participants who used their dominant hand more frequently. Although our study is preliminary because of a small sample size, these results suggest that the increase in ERD by applying anodal tDCS was stronger on the dominant side than on the non-dominant side. The background excitability of M1 may determine the strength of the effect of anodal tDCS on ERD by hand motor imagery.

AB - Transcranial direct current stimulation (tDCS) can modulate the amplitude of event-related desynchronization (ERD) that appears on the electroencephalogram (EEG) during motor imagery. To study the effect of handedness on the modulating effect of tDCS, we compared the difference in tDCS-boosted ERD during dominant and non-dominant hand motor imagery. EEGs were recorded over the left sensorimotor cortex of seven healthy right-handed volunteers, and we measured ERD induced either by dominant or non-dominant hand motor imagery. Ten minutes of anodal tDCS was then used to increase the cortical excitability of the contralateral primary motor cortex (M1), and ERD was measured again. With anodal tDCS, we observed only a small increase in ERD during non-dominant hand motor imagery, whereas the same stimulation induced a prominent increase in ERD during dominant hand motor imagery. This trend was most obvious in the participants who used their dominant hand more frequently. Although our study is preliminary because of a small sample size, these results suggest that the increase in ERD by applying anodal tDCS was stronger on the dominant side than on the non-dominant side. The background excitability of M1 may determine the strength of the effect of anodal tDCS on ERD by hand motor imagery.

KW - Electroencephalogram

KW - Event-related desynchronization

KW - Handedness

KW - Motor cortex

KW - Transcranial direct current stimulation

UR - http://www.scopus.com/inward/record.url?scp=84928588875&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84928588875&partnerID=8YFLogxK

U2 - 10.1080/1357650X.2014.998679

DO - 10.1080/1357650X.2014.998679

M3 - Article

VL - 20

SP - 453

EP - 468

JO - Laterality: Asymmetries of Body, Brain and Cognition

JF - Laterality: Asymmetries of Body, Brain and Cognition

SN - 1357-650X

IS - 4

ER -