Effect of Two Adjacent Muscles of Flexor and Extensor on Finger Pinch and Hand Grip Force

Abstract

Hand grip force and motion pattern classification using bio signal such as Electromyogram (EMG) has been very important in current studies. EMG based pattern classification has gain the utmost consideration especially in the commercial prostheses. Developing an intuitive hand control with fast response both in time and space are the major challenges. These challenges are due to the lack of information gathered from adjacent muscles. The study of adjacent muscles is crucially needed as it will allow to provide optimised hand grip and motion pattern classification without redundancy in the use of muscle information. The main aim of this paper is to investigate the effect of two adjacent flexor muscles; flexor digitorum superficial (FDS) and flexor carpi radialis (FCR), two adjacent extensor muscles: extensor carpi radialis longus (ECRL) and extensor digitorum communis (EDC) providing the perspective view of individual muscle performance compared to their adjacent muscle with respect to finger pinch and hand grip force. Practical classification results prove the significance of the study, both adjacent muscles perform almost similar with approximately 95% of similarities across different subjects. The results achieved lead to the conclusion, that the use of adjacent muscles can be reduced to only single muscle channel providing an optimised data for pattern recognition or classification.

Study of K-Nearest Neighbour Classification Performance on Fatigue and Non-Fatigue EMG Signal Features

“…During exercise such as the "bicep curl", the fatigue onset is usually caused by the "Central Fatigue" whereby fatigue is induced progressively by the exercise performed and degrading the voluntary contraction of the muscle [7]. Another way to look at muscle fatigue as seen in [8], [9]. It can be described as the reduction in the maximal force a muscle can produce in a related task that utilizes the specific muscle.…”

Analysis of Different Hand and Finger Grip Patterns using Surface Electromyography and Hand Dynamometry

“…Electromyogram (EMG) signals from the skin surface are considered as a source of neural control information and are traditionally employed as inputs to the controller of upper-limb prosthetic hands [1], helping disabled people to use the remaining parts of their own forearm/hand to accomplish the activities of daily livings (ADLs) [2]. The term EMG has been also associated with the process of detecting, recording, and evaluating the action potential produced by the muscles of the body [3], denoted as Electromyography. The central nervous system (CNS) is the origin of EMG action potential by which the motor neurons carry the information transferred along the nerve in pulse repetition or known as frequency [3].…”

“…The term EMG has been also associated with the process of detecting, recording, and evaluating the action potential produced by the muscles of the body [3], denoted as Electromyography. The central nervous system (CNS) is the origin of EMG action potential by which the motor neurons carry the information transferred along the nerve in pulse repetition or known as frequency [3]. The action potential is generated by the flow of ions through the muscle fibers' membrane, which spreads across the interfacing tissues to reach the electrode detection surface placed on the skin [1].…”

“…Surface EMG is widely used as a non-invasive method to map the relationship between electrical activity of the muscles and the generated muscle force. Therefore, the estimation of the hand force by using the sEMG signal is very essential in many applications such as design and control of a cybernetic prosthetics, sport medicine, medical rehabilitation, clinical diagnostics, kinesiology and biomechanics [3,4,5]. However, the number of muscles of interest, EMG needed channels, the number and location of surface electrodes and type of gestures can all affect the relationship between muscle force and muscle activity [7,8].…”

“…Daud et.al [3] studied the effect of two adjacent muscles on finger pinch and hand grip force. The muscles were two adjacent flexor muscles: flexor digitorum superficial (FDS) and flexor carpi radialis (FCR), two adjacent extensor muscles: extensor carpi radialis longus (ECRL) and extensor digitorum communis (EDC).…”