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Sensory detection thresholds are modulated across the cardiac cycle: evidence that cutaneous sensibility is greatest for systolic stimulation

journal contribution
posted on 08.07.2014, 14:24 by Louisa Edwards, Christopher Ring, David McIntyre, John B. Winer, Una Martin
The visceral afferent feedback hypothesis proposes that sensorimotor function is impaired by cortical inhibition associated with increased baroreceptor activation. This study is the first to examine the effects of naturally occurring variations in baroreceptor activity across the cardiac cycle on cutaneous sensory detection thresholds. In each trial, an electrocutaneous stimulus was delivered to the index finger at one of three intervals (0, 300, 600 ms) after the R-wave of the electrocardiogram. Separate interleaving up-down staircases were used to determine the 50% detection threshold for each R-wave to stimulation interval. Cutaneous sensory detection thresholds were lower for stimuli presented at R+300 ms than R+0 ms or R+600 ms. The finding that cutaneous sensibility was greater when stimulated during systole than diastole may be accounted for by a modified afferent feedback hypothesis. Copyright © 2009 Society for Psychophysiological Research.

History

School

  • Sport, Exercise and Health Sciences

Published in

Psychophysiology

Volume

46

Issue

2

Pages

252 - 256

Citation

EDWARDS, L. ... et al, 2009. Sensory detection thresholds are modulated across the cardiac cycle: evidence that cutaneous sensibility is greatest for systolic stimulation. Psychophysiology, 46 (2), pp. 252 - 256

Publisher

Wiley / © Society for Psychophysiological Research

Version

AM (Accepted Manuscript)

Publication date

2009

Notes

This is the peer reviewed version of the following article: EDWARDS, L. ... et al, 2009. Sensory detection thresholds are modulated across the cardiac cycle: evidence that cutaneous sensibility is greatest for systolic stimulation. Psychophysiology, 46 (2), pp. 252 - 256 , which has been published in final form at: http://dx.doi.org/10.1111/j.1469-8986.2008.00769.x . This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

ISSN

0048-5772

eISSN

1469-8986

Language

en