title: Modulation of stimulus-induced 20-Hz activity during lower extremity motor imagery.
abstract: Using magnetoencephalography, we measured 20-Hz activity induced after the common peroneal nerve (CPN) stimulation in 15 healthy subjects during the execution of foot movement or its motor imagery, and examined whether the 20-Hz activity is suppressed during motor imagery of foot movement. The prominent 20-Hz activity was contralaterally induced in the paracentral area after CPN stimulation, and it was almost completely suppressed during execution of the foot movement and partially suppressed during its motor imagery. These results suggest that the modulation of the 20-Hz activity is a useful indicator of the motor imagery of foot movement.
authors.affiliation: Department of Human Health Sciences, Laboratory of Neurorehabilitation, Graduate School of Medicine, Kyoto University, Syogoin, Kyoto, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Kinai
authors.forename: Jun
authors.initials: J
authors.lastname: Matsubayashi
authors.forename: Chihiro
authors.initials: C
authors.lastname: Minami
authors.forename: Wataru
authors.initials: W
authors.lastname: Tominaga
authors.forename: Megumi
authors.initials: M
authors.lastname: Nakamura
authors.forename: Takashi
authors.initials: T
authors.lastname: Nagamine
authors.forename: Masao
authors.initials: M
authors.lastname: Matsuhashi
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Mima
authors.forename: Hidenao
authors.initials: H
authors.lastname: Fukuyama
authors.forename: Akira
authors.initials: A
authors.lastname: Mitani
mesh_terms: D000293:Adolescent; D000328:Adult; D004558:Electric Stimulation / Q000379:methods; D005260:Female; D006801:Humans; D007092:Imagination / Q000502:physiology*; D035002:Lower Extremity / Q000502:physiology*; D015225:Magnetoencephalography; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D009044:Motor Cortex / Q000502:physiology; D009068:Movement; D011597:Psychomotor Performance