Key result
A discriminant analysis model correctly classifies ~97% of motor units into three major types.
Authors
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Provides validated electrophysiological motor unit typing for research; leaves open translation to clinical neuromuscular assessment.
Zengel et al. (1985) studied this question. Membrane electrical properties was evaluated on Classification of motor-unit type. A discriminant analysis model using rheobase, input resistance, membrane time constant, and AHP half-decay time properly classified 71 of 73 motor units into three major types (FF, FR, and S).
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