ABSTRACT
Synapses made in the spinal cord by neurons whose axons are severed several centimeters distant in the periphery can express substantial changes within hours of the injury. At the synapses made between group Ia muscle stretch afferents and alpha motoneurons (Ia-MN synapses), the excitatory postsynaptic potentials (EPSPs) are significantly enlarged soon after and for several days following nerve section in adult rats.
