Summated cortical evoked response testing in the deafferented primate.
Dorsal rhizotomy from C(2) or C(3) to T(4) in the primate results in failure to elicit summated cortical responses from systematic stimulation of the appropriate peripheral nerves. Under these conditions there is thus no evidence of sensory input into the cerebral cortex. A nonclassical mechanism must therefore be operational to explain the extensive purposive movements observed in the deafferented animals.
D000818:Animals; D002540:Cerebral Cortex / Q000502:physiology*; D004558:Electric Stimulation; D004569:Electroencephalography; D005071:Evoked Potentials; D005121:Extremities / Q000294:innervation*; D000882:Haplorhini; D008251:Macaca; D008475:Median Nerve / Q000502:physiology; D009043:Motor Activity; D009475:Neurons, Afferent / Q000502:physiology; D010215:Papio; D011826:Radial Nerve / Q000502:physiology; D013126:Spinal Nerve Roots / Q000601:surgery*; D009435:Synaptic Transmission; D014459:Ulnar Nerve / Q000502:physiology