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Excitability changes in trigeminal primary afferent fibers in response to noxious and nonnoxious stimuli

Excitability changes in trigeminal primary afferent fibers in response to noxious and nonnoxious... Primary Afferent Stimuli Fibers in Response RONALD F. YOUNG Nonnoxious ROBERT B. KING Department Neurosurgery, State University New York Upstate Medical Center, Syracuse, New York 13210 GATE CONTROL THE theory Melzack Wall (27) proposed that neural activity in response to noxious stimuli results in primary afferent hyperpolarization. This idea was based on the demonstration (9, 28, 29) positive dorsal root potentials decreased large primary afferent fibers in response to electrical stimulation fine afferent fibers. Attempts by others to confirm these findings (18, 43, 53) have been unsuccessful. An advantage the trigemina1 system in studying this problem is that in contrast to the dorsal horn, the spinal trigeminal nucleus is divided into a caudal portion, nucleus caudalis, which is essentia1 for the perception noxious facial stimuli (17, 22, 25, 40, 45, 46, 52), rostra1 portions, nucleus oralis main sensory nucleus, which are important in the perception nonnoxious facial stimuli (8). Another advantage the trigeminal system is that electrical stimulation exposed dental pulp allows accurate timing a stimulus which is thought to be noxious (1, 3, 4, 20, 34, 36, 39, 44). The purpose this study was to compare the effect noxious nonnoxious stimuli on the level poIarization primary afferent http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Neurophysiology The American Physiological Society

Excitability changes in trigeminal primary afferent fibers in response to noxious and nonnoxious stimuli

Journal of Neurophysiology , Volume 35: 87 – Jan 1, 1972

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Publisher
The American Physiological Society
Copyright
Copyright © 1972 the American Physiological Society
ISSN
0022-3077
eISSN
1522-1598
Publisher site
See Article on Publisher Site

Abstract

Primary Afferent Stimuli Fibers in Response RONALD F. YOUNG Nonnoxious ROBERT B. KING Department Neurosurgery, State University New York Upstate Medical Center, Syracuse, New York 13210 GATE CONTROL THE theory Melzack Wall (27) proposed that neural activity in response to noxious stimuli results in primary afferent hyperpolarization. This idea was based on the demonstration (9, 28, 29) positive dorsal root potentials decreased large primary afferent fibers in response to electrical stimulation fine afferent fibers. Attempts by others to confirm these findings (18, 43, 53) have been unsuccessful. An advantage the trigemina1 system in studying this problem is that in contrast to the dorsal horn, the spinal trigeminal nucleus is divided into a caudal portion, nucleus caudalis, which is essentia1 for the perception noxious facial stimuli (17, 22, 25, 40, 45, 46, 52), rostra1 portions, nucleus oralis main sensory nucleus, which are important in the perception nonnoxious facial stimuli (8). Another advantage the trigeminal system is that electrical stimulation exposed dental pulp allows accurate timing a stimulus which is thought to be noxious (1, 3, 4, 20, 34, 36, 39, 44). The purpose this study was to compare the effect noxious nonnoxious stimuli on the level poIarization primary afferent

Journal

Journal of NeurophysiologyThe American Physiological Society

Published: Jan 1, 1972

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