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  • Title: Discharges of forelimb spindle primary afferents during locomotor activity in the decorticate cat.
    Author: Cabelguen JM, Orsal D, Perret C.
    Journal: Brain Res; 1984 Jul 23; 306(1-2):359-64. PubMed ID: 6235892.
    Abstract:
    In the acute decorticate cat, the discharge patterns of single spindle primary afferents from various forelimb muscles during locomotion have been examined in relation to the extrafusal activity. In a given muscle under isometric conditions, the activation of spindle primary endings was closely related to that of extrafusal muscle fibers. Since this increase in spindle discharge could occur in the absence of detectable electromyographic activity in the parent muscle, it resulted, at least to some extent from an enhanced activity in gamma efferents. The data are discussed in relation to previous studies of forelimb efferent activity and hindlimb fusimotor control in the same preparation.
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