Method and system for signal processing rehabilitation exercise signals

A system for signal processing rehabilitation exercise signals, the system comprising:

• at least one memory storing computer program code;
• and
• at least one processor configured to execute the computer program code to perform processing comprising:
• receiving first and second motion signals associated with movements of a body part as to muscle movement, wherein the first and second motion signals comprise temporal data of the movements;
• segmenting each of the first and second motion signals into a plurality of segmented signals based on gradients of the first and second motion signals, wherein each segmented signal has a consistent gradient;
• automatically modifying the segmented signals to form multiple combinations of matching signals with similar gradients between the first and second motion signals, such that the first and second motion signals are in one-to-one correspondence;
• extracting corresponding time intervals of the matching signals in the correspondences;
• recording first and second electromyograms (EMGs) respectively associated with the first and second motion signals, the first and second EMGs including records of electric potential generated by a muscle and are recorded at a same time as the first and second motion signals;
• and
• comparing the first and second EMGs according to the extracted corresponding time intervals to determine a change in a strength of the muscle in order to correlate the first and second EMG signals with the first and second motion signals as to muscle movement, by:
• segmenting the first and second EMGs based on the extracted corresponding time intervals;
• and
• determining a difference in amplitudes of the segmented first and second EMGs between the first and second EMGs,
• wherein the first and second motion signals comprise flexion or extension angle of an upper or lower limb over a period of time.