Selectivity and sensitivity of intramuscular and transcutaneous electromyography electrodes.
We evaluated the differences in selectivity and sensitivity of intramuscular fine-wire electrodes and transcutaneous electrodes in detecting dynamic electromyography (EMG) signals from extensor digitorum (EDC) and extensor carpi radialis (ECR) muscles during isolated EDC and ECR contractions in two able-bodied subjects. Intramuscular fine-wire electrodes differentiated EDC and ECR EMG activities better than transcutaneous electrodes, and intramuscular fine-wire electrodes recorded higher amplitude signals than transcutaneous electrodes. Data suggest that intramuscular fine-wire electrodes are more selective and sensitive than transcutaneous electrodes in detecting EMG signals from adjacent forearm muscles.
Chae
J
J
Center for Physical Medicine and Rehabilitation, Case Western Reserve University, Cleveland, OH 44109, USA.
Knutson
J
J
Hart
R
R
Fang
Z P
ZP
D004558:Electric Stimulation; D004566:Electrodes; D004576:Electromyography / Q000379:methods*; D006801:Humans; D008297:Male; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology; D012680:Sensitivity and Specificity; D012867:Skin