An interesting study here. Bottom line: Some stroke survivors can feel when they touch the affected side, but cannot feel it when someone else touches them. This experiment basically shows that, in fact, they do feel better when they do it themselves.
Implications: reestablishing sensation may involve repeatedly touching of the affected side by the unaffected side. Maybe. Still, the question of how to neuroplastcially rewire sensation is interesting because sensation and movement are essential to each other.
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