6533b829fe1ef96bd1289b7e
RESEARCH PRODUCT
Changes in the probability of firing of motor units following electrical stimulation in human limb muscles
I. M. Tarkkasubject
AdultMalePhysiologyNeural ConductionStimulationElectromyographyReflexmedicineHumansProbabilityMotor NeuronsLegmedicine.diagnostic_testElectromyographybusiness.industryMusclesAnatomyNeurophysiologyElectric StimulationMotor unitElectrophysiologyArmReflexExcitatory postsynaptic potentialFemalebusinessExtensor digitorum brevis muscleMuscle Contractiondescription
Changes in the probability of motor unit firing was studied in ten different muscles (six muscles in the upper extremity and four muscles in the lower extremity) of eleven healthy human subjects. The responses were elicited by the electrical stimulation of cutaneous or mixed nerves during weak voluntary contraction of the muscle studied, and were recorded by averaging the rectified surface electromyogram. In eight of the ten muscles, well-detectable, short and long latency excitatory phases were observed. The most constant and well-identified excitatory responses were observed in the first interosseus dorsalis muscle in the hand, and in the extensor digitorum brevis muscle in the foot. These two distal muscles seem to be the most useful muscles for routine determination of the short and long latency responses to cutaneous stimulation.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1986-01-01 | Acta Physiologica Scandinavica |