Patent ID: 8660641
Filing Date: 2014-02-25
Classification: A61B

Abstract:
1. A system for evaluating the motor control function in the brain of a subject from the electromyogram (EMG) data of joint prime movers and the data on the position, velocity and acceleration of the joint, wherein both of said data have been obtained by measuring a target-tracking movement performed by the subject with a motion measurement unit that tracks a moving target, said system comprising a computer, configured using a program or software, to perform the following steps (a) to (c): (a) separating the frequencies of said EMG data and the frequencies of said data on the position, velocity and acceleration into a plurality of frequency components; (b) determining the ratio of viscosity coefficient to elastic coefficient (B/K ratio) for each of said frequency components by applying said EMG data and said data on the position, velocity and acceleration to the following movement equation (1): where τ represents joint torque; θ represents joint angle; {umlaut over (θ)} represents the angular velocity of joint; {dot over (θ)} represents the angular acceleration of joint; M represents the moment of inertia; B represents viscosity coefficient; K represents elastic coefficient; T (c) evaluating the causal relationship between the target-tacking movement and the motor control function in the brain using said B/K ratio as an index.