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The Pain & Therapy Bibliography, Record ID 3627 {show all records}

Visual distortion of a limb modulates the pain and swelling evoked by movement


added Apr 9, 13, updated May 1, 13
most detailed summaries by Paul Ingraham

summary

Trippy: swelling and inflammation in a limb can be increased by magnifying a patient’s view of it — and reduced by the reverse.

item type
article in a journal
authors
G Lorimer Moseley, Timothy J Parsons, and Charles Spence
pubmed
http://www.ncbi.nlm.nih.gov/pubmed/19036329
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journal
Curr Biol
year
2008
month
Nov
volume
18
number
22
pages
R1047-8

abstract

The feeling that our body is ours, and is constantly there, is a fundamental aspect of self-awareness. Although it is often taken for granted, our physical self-awareness, or body image, is disrupted in many clinical conditions. One common disturbance of body image, in which one limb feels bigger than it really is, can also be induced in healthy volunteers by using local anaesthesia or cutaneous stimulation. Here we report that, in patients with chronic hand pain, magnifying their view of their own limb during movement significantly increases the pain and swelling evoked by movement. By contrast, minifying their view of the limb significantly decreases the pain and swelling evoked by movement. These results show a top-down effect of body image on body tissues, thus demonstrating that the link between body image and the tissues is bi-directional.

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