Cooling the Thermal Grill Illusion through Self-Touch
| Autor: | Patrick Haggard, Frédérique de Vignemont, Marjolein P.M. Kammers |
|---|---|
| Přispěvatelé: | Institute of cognitive neuroscience, University College of London [London] (UCL), Institut Jean-Nicod (IJN), Département d'Etudes Cognitives - ENS Paris (DEC), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École des hautes études en sciences sociales (EHESS)-Collège de France (CdF (institution))-Centre National de la Recherche Scientifique (CNRS)-Département de Philosophie - ENS Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
medicine.medical_specialty
Hot Temperature media_common.quotation_subject Illusion Biology General Biochemistry Genetics and Molecular Biology 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Painful hand Physical Stimulation Sensory threshold Body Image medicine Humans Thermosensing Thermal grill illusion 030304 developmental biology media_common 0303 health sciences Proprioception Agricultural and Biological Sciences(all) Biochemistry Genetics and Molecular Biology(all) Chronic pain Nociceptors Multisensory integration Pain Perception [SCCO.COGPSY]Cognitive science/domain_scco.cogpsy medicine.disease Illusions Cold Temperature Touch Sensory Thresholds Nociceptor General Agricultural and Biological Sciences 030217 neurology & neurosurgery |
| Zdroj: | Current Biology-CB Current Biology-CB, Elsevier, 2010, pp.1-4 |
| ISSN: | 0960-9822 1879-0445 |
| Popis: | SummaryAcute peripheral pain is reduced by multisensory interactions at the spinal level [1]. Central pain is reduced by reorganization of cortical body representations [2, 3]. We show here that acute pain can also be reduced by multisensory integration through self-touch, which provides proprioceptive, thermal, and tactile input forming a coherent body representation [4, 5]. We combined self-touch with the thermal grill illusion (TGI) [6]. In the traditional TGI, participants press their fingers on two warm objects surrounding one cool object. The warm surround unmasks pain pathways, which paradoxically causes the cool object to feel painfully hot. Here, we warmed the index and ring fingers of each hand while cooling the middle fingers. Immediately after, these three fingers of the right hand were touched against the same three fingers on the left hand. This self-touch caused a dramatic 64% reduction in perceived heat. We show that this paradoxical release from paradoxical heat cannot be explained by low-level touch-temperature interactions alone. To reduce pain, we often clutch a painful hand with the other hand. We show here that self-touch not only gates pain signals reaching the brain [7–9] but also, via multisensory integration, increases coherence of cognitive body representations to which pain afferents project [10]. |
| Databáze: | OpenAIRE |
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