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Tactile spatial resolution. I. Two-point discrimination, gap detection, grating resolution, and letter recognition

Tactile spatial resolution. I. Two-point discrimination, gap detection, grating resolution, and... KENNETH 0. JOHN R. PHILLIPS of Physiology, University of Melbourne, Sensory Processes Laboratory, Parkville, 3052, Australia Department SUMMARY CONCLUSIONS 1. The s reported here are part of an investigation of the neural mechanisms underlying tactile sensation. The first step in such an investigation must be a broad, accurate characterization of tactile discrimination. More particularly, the investigation requires specification of the discrimination behavior that depends strictly on neural mechanisms. The results of four al designs are reported here. No single , taken in isolation, provides a basis for ascertaining which aspects of discrimination are based on information in the neural discharge patterns rather than on intensive or temporal information. Taken together, the results of the four s provide a consistent basis for examining the neural mechanisms underlying tactile discrimination. 2. I, a modified two-point limen test, showed that subjects could reliably discriminate between one two OS-mmdiameter points even when there was no separation between the two points. The result demonstrated a high level of resolution but discrimination may have been based on any of a number of neural codes. The contact area the overall dimensions of the two stimuli being compared were different , therefore, discrimination may have been http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Neurophysiology The American Physiological Society

Tactile spatial resolution. I. Two-point discrimination, gap detection, grating resolution, and letter recognition

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Publisher
The American Physiological Society
Copyright
Copyright © 1981 the American Physiological Society
ISSN
0022-3077
eISSN
1522-1598
Publisher site
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Abstract

KENNETH 0. JOHN R. PHILLIPS of Physiology, University of Melbourne, Sensory Processes Laboratory, Parkville, 3052, Australia Department SUMMARY CONCLUSIONS 1. The s reported here are part of an investigation of the neural mechanisms underlying tactile sensation. The first step in such an investigation must be a broad, accurate characterization of tactile discrimination. More particularly, the investigation requires specification of the discrimination behavior that depends strictly on neural mechanisms. The results of four al designs are reported here. No single , taken in isolation, provides a basis for ascertaining which aspects of discrimination are based on information in the neural discharge patterns rather than on intensive or temporal information. Taken together, the results of the four s provide a consistent basis for examining the neural mechanisms underlying tactile discrimination. 2. I, a modified two-point limen test, showed that subjects could reliably discriminate between one two OS-mmdiameter points even when there was no separation between the two points. The result demonstrated a high level of resolution but discrimination may have been based on any of a number of neural codes. The contact area the overall dimensions of the two stimuli being compared were different , therefore, discrimination may have been

Journal

Journal of Neurophysiology – The American Physiological Society

Published: Dec 1, 1981

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