Characteristics of EEG oscillations during kinesthetic illusion induced by afferent input from muscle spindle

2015 Fiscal Year Final Research Report

• Project/Area Number: 26750191
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Rehabilitation science/Welfare engineering
• Research Institution: Sapporo Medical University
• Principal Investigator: Shibata Eriko 札幌医科大学, 保健医療学部, 研究員 (80516568)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 振動刺激 / 運動知覚 / 運動イメージ / 事象関連脱同期

Outline of Final Research Achievements

Afferent inputs from sensory receptors in muscle spindles and skin, and efferent signals from the central nervous system that trigger intentional movement, contribute to kinesthetic perception. We investigated the characteristics of kinesthetic perception that would be generated by combining motor imagery and sensory inputs on the basis of the physiological index. An excitatory response in antagonistic muscles was induced when subjects perceived movement during combination of motor imagery and tendon vibration. Moreover, the averaged spectrum power in sensorimotor area decreased during kinesthetic perception induced by tendon vibration or visual stimuli. This study suggested that it is possible to detect the induction of kinesthetic perception by analyzing the EEG signals in bilateral sensorimotor areas. We speculate that this knowledge will prove useful for the development of algorithms that can confirm the intensity of kinesthetic perception in clinical rehabilitation.

Free Research Field

リハビリテーション科学・福祉工学