title: Regional cerebral blood flow (rCBF) in man during perception of radiant warmth and heat pain.
abstract: The present study concerns the effects of experimental pain (radiant warmth and heat pain) on regional cerebral blood flow (rCBF) in pretrained subjects. The radiant warmth caused a general rCBF increase. However, if anxiety was avoided, heat pain caused the general rCBF level to return towards the level at rest. Thus, pain sensation per se may not cause a larger rCBF (and metabolic) response than that of the localized tactile stimulation, provided that the element of psychic apprehension and anxiety is eliminated or controlled.
mesh_terms: D000328:Adult; D001007:Anxiety; D001944:Breath Tests; D002245:Carbon Dioxide / Q000032:analysis; D002560:Cerebrovascular Circulation; D004558:Electric Stimulation; D006358:Hot Temperature; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain; D010465:Perception; D012146:Rest
chemical_list: D002245:Carbon Dioxide