CUED Publications database

Pain relief by touch: a quantitative approach.

Mancini, F and Nash, T and Iannetti, GD and Haggard, P (2013) Pain relief by touch: a quantitative approach. Pain, 155. pp. 635-642.

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Pain relief by touch has been studied for decades in pain neuroscience. Human perceptual studies revealed analgesic effects of segmental tactile stimulation, as compared to extrasegmental touch. However, the spatial organisation of touch-pain interactions within a single human dermatome has not been investigated yet. In 2 experiments we tested whether, how, and where within a dermatome touch modulates the perception of laser-evoked pain. We measured pain perception using intensity ratings, qualitative descriptors, and signal detection measures of sensitivity and response bias. Touch concurrent with laser pulses produced a significant analgesia, and reduced the sensitivity in detecting the energy of laser stimulation, implying a functional loss of information within the ascending Aδ pathway. Touch also produced a bias to judge laser stimuli as less painful. This bias decreased linearly when the distance between the laser and tactile stimuli increased. Thus, our study provides evidence for a spatial organisation of intrasegmental touch-pain interactions.

Item Type: Article
Uncontrolled Keywords: Analgesia Pain Relief Signal detection theory Space Touch Adolescent Adult Female Humans Lasers Male Pain Pain Measurement Pain Perception Pain Threshold Physical Stimulation Reaction Time Therapeutic Touch Touch Young Adult
Divisions: Div F > Computational and Biological Learning
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:39
Last Modified: 18 May 2018 20:21