S&M Young Researcher Paper Award 2020
Recipients: Ding Jiao, Zao Ni, Jiachou Wang, and Xinxin Li [Winner's comments]
Paper: High Fill Factor Array of Piezoelectric Micromachined
Ultrasonic Transducers with Large Quality Factor

S&M Young Researcher Paper Award 2021
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Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
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Vibratory Somatosensory Stimulus Improves Neuromechanical Task of Stair Climbing by the Elderly

Seunghun Ko, Kiyoung Kwak, Mattatika Pomrop, and Dongwook Kim

(Received April 17, 2020; Accepted April 22, 2021)

Keywords: local vibration, mu rhythm, stair climbing, biomechanics, elderly

The purpose of this study was to investigate the influence of sensorimotor-cortex-response-based vibratory stimulation on stair climbing by the elderly and to reveal the functional assistance effect of vibratory stimulation. To do this, vibratory stimulation conditions (VSCs) were set through the reduction of the mu rhythm, an index of sensorimotor cortex excitability, and applied to elderly people during stair climbing. Joint angle, moment, power, and muscle co-activation (CA) of lower limbs were analyzed to investigate the influence of VSCs on stair climbing. As a result of vibratory stimulation, the biomechanical characteristics of the ankle and hip joints were further developed according to the VSC, and a tendency to compensate the knee joint work appeared. Also, functional improvement of the ankle joint was shown through greater energy transfer from the knee joint to the ankle joint. These results suggested that sensorimotor-cortex response-based vibratory stimulation has the effect of functional assistance of the movement of elderly people and may be useful in research on movement assistance or rehabilitation for people with reduced body functions.

Corresponding author: Dongwook Kim




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