Analysis of motor variability in the dynamics of the neuro-musculo-skeletal system

2016 Fiscal Year Final Research Report

• Project/Area Number: 25330311
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Intelligent robotics
• Research Institution: Okayama Prefectural University
• Principal Investigator: Yamasaki Taiga 岡山県立大学, 情報工学部, 准教授 (40364096)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 運動制御 / 変動性 / 神経筋骨格系

Outline of Final Research Achievements

The fluctuation of human motions across repetitive trials can reflect the control objective and the motor coordination used by the nervous system. However, its details are unclear. We showed, in the bicycle pedaling movements at a steady speed, that the inter-trial variances of the angular velocities and the joint torques of the lower limbs were distributed asymmetrically so that the variances of the tangential velocity and the tangential force on the pedal shaft were suppressed selectively. We proposed a new algorithm to estimate muscle activity with high accuracy by using a musculo-skeletal model, a static optimization, and the input of the joint angle and its first to fourth derivatives with respect to time.

Free Research Field

生体やロボットの運動制御