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Physilogy and morphology of substantia gelatinosa neurons intracellularly stained with horserdish peroxidase

Physilogy and morphology of substantia gelatinosa neurons intracellularly stained with horserdish... Neurons in Rexed's layer II were physiologically characterized with natural and electrical stimuli applied to their cutaneous receptive field. The neurons were then intracellularly stained with horseradish peroxidase. Three general patterns of physiological responses were found Nociceptive specific neurons did not respond to gentle mechanical stimulation. Most responded exclusively to tissue‐damaging stimuli. Some also responded to moderately heavy pressure, but these responded to noxious stimuli with an increased discharge frequency. Wide dynamic range neurons responded to both gentle mechanical stimulation and to tissue‐damaging stimulation. Low‐threshold mechanoreceptive neurons responded only to gentle mechanical stimulation. Some of the low‐threshold mechanoreceptive neurons were innervated by primary afferents with unmyelinated axons. Excepting those low‐threshold mechanoreceptive neurons with input form unmyelinated afferents, the patterns of primary afferent innervation of layer II neurons were similar to the patterns innervation that gave been found for neurons in layers I and IV‐V. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Comparative Neurology Wiley

Physilogy and morphology of substantia gelatinosa neurons intracellularly stained with horserdish peroxidase

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References (61)

Publisher
Wiley
Copyright
"Copyright © 1980 Wiley Subscription Services, Inc., A Wiley Company"
ISSN
0021-9967
eISSN
1096-9861
DOI
10.1002/cne.901940407
pmid
6162863
Publisher site
See Article on Publisher Site

Abstract

Neurons in Rexed's layer II were physiologically characterized with natural and electrical stimuli applied to their cutaneous receptive field. The neurons were then intracellularly stained with horseradish peroxidase. Three general patterns of physiological responses were found Nociceptive specific neurons did not respond to gentle mechanical stimulation. Most responded exclusively to tissue‐damaging stimuli. Some also responded to moderately heavy pressure, but these responded to noxious stimuli with an increased discharge frequency. Wide dynamic range neurons responded to both gentle mechanical stimulation and to tissue‐damaging stimulation. Low‐threshold mechanoreceptive neurons responded only to gentle mechanical stimulation. Some of the low‐threshold mechanoreceptive neurons were innervated by primary afferents with unmyelinated axons. Excepting those low‐threshold mechanoreceptive neurons with input form unmyelinated afferents, the patterns of primary afferent innervation of layer II neurons were similar to the patterns innervation that gave been found for neurons in layers I and IV‐V.

Journal

The Journal of Comparative NeurologyWiley

Published: Mar 15, 1981

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