Coupling between unmyelinated peripheral nerve fibers does not involve sympathetic efferent fibers.
Bidirectional coupling of action potential activity between unmyelinated fibers in the normal peripheral nerve of monkey has recently been reported. Often typical C-fiber nociceptors are identified with the coupled fibers. In this study, sympathetic stimulation and sympathetic ablation experiments demonstrated that the sympathetic nervous system is not involved in this coupling.
Meyer
R A
RA
Applied Physics Laboratory, School of Medicine, Johns Hopkins University, Laurel, MD 20707.
Campbell
J N
JN
D000200:Action Potentials; D000818:Animals; D004525:Efferent Pathways / Q000502:physiology; D004558:Electric Stimulation; D008252:Macaca fascicularis; D009412:Nerve Fibers / Q000502:physiology*; D009619:Nociceptors / Q000502:physiology; D010525:Peripheral Nerves / Q000502:physiology*; D013564:Sympathetic Nervous System / Q000502:physiology*