Changes in cortical excitability during and just before motor imagery

Koji Aono, Mitsuhiko Kodama, Yoshihisa Masakado, Yoshihiro Muraoka

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Objective: Changes in cortical excitability during motor imagery were investigated in order to reveal the effect of hand dominance. During motor imagery, motor evoked potentials (MEPs) were recorded from the first dorsal interosseous (FDI) muscle of the dominant hand using transcranial magnetic stimulation (TMS). Methods: Twelve healthy right-handed subjects participated. Three motor imagery tasks (MITs) were provided; dominant hand grasping, non-dominant hand grasping, and ankle dorsiflexion ipsilateral to the dominant hand. MEPs were also recorded from the FDI muscle of the non-dominant hand during the same tasks. Result: MEPs increased significantly in the dominant hand during MIT, just before MIT of the dominant hand, and prior to ankle dorsiflexion ipsilateral to the dominant hand. MEPs obtained from the FDI muscle of the dominant hand during MITs were greater than that obtained from the FDI muscle of the non-dominant hand. However, this difference was not significant. Conclusion: The left primary motor cortex (M1) was more excited than M1 during MITs of the hand muscles. Cortical excitability increased just before MIT of the contralateral hand and leg muscles.

    Original languageEnglish
    Pages (from-to)1-6
    Number of pages6
    JournalTokai Journal of Experimental and Clinical Medicine
    Volume38
    Issue number1
    Publication statusPublished - 2013 Apr

    Fingerprint

    Imagery (Psychotherapy)
    Hand
    Motor Evoked Potentials
    Muscles
    Ankle
    Cortical Excitability
    Transcranial Magnetic Stimulation
    Motor Cortex
    Leg

    Keywords

    • Cortical excitability
    • Lateralization
    • Motor evoked potential
    • Motor imagery
    • Transcranial magnetic stimulation

    ASJC Scopus subject areas

    • Medicine(all)

    Cite this

    Changes in cortical excitability during and just before motor imagery. / Aono, Koji; Kodama, Mitsuhiko; Masakado, Yoshihisa; Muraoka, Yoshihiro.

    In: Tokai Journal of Experimental and Clinical Medicine, Vol. 38, No. 1, 04.2013, p. 1-6.

    Research output: Contribution to journalArticle

    Aono, Koji ; Kodama, Mitsuhiko ; Masakado, Yoshihisa ; Muraoka, Yoshihiro. / Changes in cortical excitability during and just before motor imagery. In: Tokai Journal of Experimental and Clinical Medicine. 2013 ; Vol. 38, No. 1. pp. 1-6.
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