title: Selectivity and sensitivity of intramuscular and transcutaneous electromyography electrodes.
abstract: 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.
authors.affiliation: Center for Physical Medicine and Rehabilitation, Case Western Reserve University, Cleveland, OH 44109, USA.
authors.forename: J
authors.initials: J
authors.lastname: Chae
authors.forename: J
authors.initials: J
authors.lastname: Knutson
authors.forename: R
authors.initials: R
authors.lastname: Hart
authors.forename: Z P
authors.initials: ZP
authors.lastname: Fang
mesh_terms: 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