The present disclosure discloses a multi-finger grasping function test analyzer and method based on multi-directional stable deflection torques, which can accurately detect and quantitatively assess the grasping function of all five fingers participating simultaneously. The test analyzer comprises a test device and a processor; the test device is configured to measure multi-directional three-dimensional forces and three-dimensional torques during the grasping process of subject's fingers; and the processor is configured to acquire the multi-directional three-dimensional force and three-dimensional torque data of the fingers measured by the test device to form multiple three-dimensional force and three-dimensional torque vector time series, perform multi-scale sample entropy analysis on the multiple three-dimensional force and three-dimensional torque vector time series to obtain dynamic coupling complexity values of multi-time scales, and calculate an indicator of dynamic coordination between the fingers.
AN INSTRUMENT AND METHOD FOR TESTING AND ANALYZING THE FUNCTION OF PRECISE CONTROL OF DIGIT FORCES DURING GRASPING BASED ON MULTI-DEFLECTIONAL TORQUE EFFECTS