Derivation of local vibratory stimulus for stair climbing based on Mu rhythm

The purpose of this study was to derive the local vibration that the sensorimotor area responds sensitively and to investigate changes in muscle activity of the lower limb when the vibratory stimulus was applied during the stair climbing. The electroencephalogram was measured when vibratory stimulus was applied to each tendon and changes in Mu rhythm activity were analyzed. A specific vibration frequency was selected through the results of the Mu rhythm analysis, and the specific vibratory conditions were set by combining the tendon site, vibration intensity, and frequencies. These vibratory conditions were applied simultaneously with the electromyogram measurement during the stair climbing. As a result, we confirm the specific vibration frequencies in each tendon. Also, we infer that there is a sensitive vibratory stimulus for each tendon. Moreover, the specific vibratory stimulus activates the sensorimotor area and elicits an increase in the muscle activity. This result means that specific vibration frequency and stimulation site should be considered in rehabilitation therapy that used the local vibratory stimulus. Also, local vibratory stimulus can be used to assist in stair climbing.