Recruitment order of motor units during the stretch reflex in man.
The recruitment pattern of single motor units contributing to the short- and long-latency periods of the stretch reflex was investigated in human adults. When non-tonic, a given unit responded to stretch during the long-latency reflex period. When made tonic, the same unit showed a reflex response during the short-latency period, while a higher threshold, non-tonic unit would respond during the long-latency period. The data show an orderly recruitment of motor units during both phases of the stretch reflex in man.
D000328:Adult; D006801:Humans; D007537:Isometric Contraction; D009046:Motor Neurons / Q000502:physiology*; D009132:Muscles / Q000502:physiology*; D009431:Neural Conduction; D011930:Reaction Time / Q000502:physiology; D011999:Recruitment, Neurophysiological; D012026:Reflex, Stretch