|facilitation or disinhibition of spinal motor structures uninvolved in the response. This could point to a presynaptic inhibition of the agonist Ia afferents.|
|Transition from Preparation to Action. A sudden selective increase in reflex amplitudes in the agonist after the presentation of the RS is present in the middle of an aselective generalized increase in reflex amplitudes in muscles uninvolved in the response; the differential effect is reversed.|
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