01079nas a2200181   4500008004100000022001400041245005300055210005200108260001200160300001400172490000800186520058000194653001600774100002100790700001600811700002300827856004700850       1991                        eng d  a0077-892300aOperantly conditioned plasticity in spinal cord.0 aOperantly conditioned plasticity in spinal cord  c08/1991  a338–3480 v6273 aRecent work has shown that the monosynaptic pathway of the SSR can be operantly conditioned, and that a significant part of the plasticity responsible for the behavioral change resides in the spinal cord. The most likely sites of this activity-driven plasticity are the synapse of the Ia afferent neuron on the motoneuron and/or the motoneuron itself. Because the SSR pathway is the simplest and most accessible stimulus-response pathway in the vertebrate CNS, it may provide a valuable experimental model for elucidating activity-driven CNS changes responsible for learning.10aSpinal Cord1 aWolpaw, Jonathan1 aLee, C., L.1 aCarp, Jonathan, S.  uhttp://www.ncbi.nlm.nih.gov/pubmed/1883143