TY - JOUR T1 - Reduced day-to-day variation accompanies adaptive plasticity in the primate spinal stretch reflex. JF - Neuroscience letters Y1 - 1985 A1 - Jonathan Wolpaw A1 - O'Keefe, J. A. A1 - Kieffer, V. A. A1 - Sanders, M. G. KW - Learning KW - Memory KW - plasticity KW - primate KW - spinal reflex KW - stretch reflex AB - Monkeys can change the amplitude of the spinal stretch reflex (SSR), or M1, when reward is made contingent on amplitude. The present study demonstrates that reduced SSR day-to-day variation accompanies such adaptive SSR change. This finding supports the assumption that initial, phase I, SSR change results from contingency-appropriate stabilization of tonic activity in relevant descending spinal cord pathways. VL - 54 UR - http://www.ncbi.nlm.nih.gov/pubmed/3991057 ER -