Response properties of spinal neurons projecting to midbrain or midbrain-thalamus in the monkey.
Response and receptive field properties were determined for 24 spinal neurons backfired from midbrain or midbrain-thalamus in the anesthetized monkey. Recording sites were located in laminae I (11 cells), IV (6), V (6) and VI (1) in the lumbosacral spinal cord. The mean axonal conduction velocity of cells projecting to midbrain was significantly less than that of cells projecting to midbrain-thalamus. Cells backfired only from midbrain had complex excitatory receptive fields whereas those projecting to midbrain-thalamus had excitatory receptive fields confined to a single limb. Cells in both populations had complex inhibitory receptive fields.
Yezierski
R P
RP
Department of Neurological Surgery, University of Miami, FL 33136.
Sorkin
L S
LS
Willis
W D
WD
D000818:Animals; D001369:Axons / Q000502:physiology; D008252:Macaca fascicularis; D008636:Mesencephalon / Q000502:physiology*; D009431:Neural Conduction; D009474:Neurons / Q000502:physiology*; D010146:Pain / Q000502:physiology; D010812:Physical Stimulation; D013116:Spinal Cord / Q000166:cytology / Q000502:physiology*; D009435:Synaptic Transmission; D013788:Thalamus / Q000502:physiology*; D013997:Time Factors