University of Bath researchers report that people with particular kinds of persistent hand pain could ease the ouch by looking at their healthy hand in the mirror. From a press release:
This ‘cortical’ model of pain suggests that the brain’s image of the body can become faulty, resulting in a mismatch between the brain’s movement control systems and its sensory systems, causing a person to experience pain when they move a particular hand, foot or limb.
Researchers believe that this kind of problem could be behind a host of pain-related disorders, such as complex regional pain syndrome and repetitive strain injury.
In an investigation of whether this system can be corrected using mirrors to trick the brain, researchers asked a number of patients with complex regional pain syndrome (a chronic debilitating condition affecting 10,000 – 20,000 patients in the UK at any one time) to carry out routine exercises in front of a mirror.
More than half experienced pain relief during and after the exercise and further investigations showed that even greater improvements can be achieved if the tasks are practiced beforehand.
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