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Updated: Jun 23, 2026

An Experiment Using Functional Near-Infrared Spectroscopy and Robot-Assisted Multi-Joint Pointing Movements of the Lower Limb
Published on: June 7, 2024
Modulation of stimulus-induced 20-Hz activity during lower extremity motor imagery
Takahiro Kinai1, Jun Matsubayashi, Chihiro Minami
1Department of Human Health Sciences, Laboratory of Neurorehabilitation, Graduate School of Medicine, Kyoto University, Syogoin, Kyoto, Japan.
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.
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