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Sensory Communication$
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Walter A. Rosenblith

Print publication date: 2012

Print ISBN-13: 9780262518420

Published to MIT Press Scholarship Online: August 2013

DOI: 10.7551/mitpress/9780262518420.001.0001

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Neural Factors limiting Cutaneous Spatiotemporal Discriminations

Neural Factors limiting Cutaneous Spatiotemporal Discriminations

(p.725) 36 Neural Factors limiting Cutaneous Spatiotemporal Discriminations
Sensory Communication

Rosner Burton S.

The MIT Press

This chapter is primarily concerned with the cutaneous system, and three major classes of experiments are distinguished. In the first experiments to be discussed, two temporally dispersed stimuli occupy noticeably different spatial positions. These studies emphasize the role of central neural events in temporal interactions, since the stimuli activate different subsets of receptors and peripheral axons. The second class comprises experiments in which two successive stimuli occur at the same locus, thereby bringing into play peripheral as well as central factors. The third class considers n-stimulus generalizations of the preceding two classes of experiments. It is also shown here that psychophysical and electrophysiological studies of responses to successive stimuli bring out certain parallels between behavioral and physiological processes.

Keywords:   cutaneous system, temporally dispersed stimuli, spatial positions, central neural events, peripheral axons

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