It has been assumed that patients suffering from chronic disorders of consciousness (DOC) do not feel pain, but it is possible that some of them just cannot report it. The modulation of γ-band oscillatory activity (γBO) in centro-parietal areas (considered as a marker of either subjective pain perception processes or pain-related motor behavior preparation) by part of the anterior cingulate cortex (ACC) has been proposed to be suggestive of conscious pain perception, and could therefore be used to assess the maintenance of some level of conscious pain perception in DOC patients.
from The Journal of Pain http://ift.tt/1Kj6DH7
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