Pain and somatic sensation are transiently normalized by illusory body ownership in a patient with spinal cord injury
Pain and somatic sensation are transiently normalized by illusory body ownership in a patient with spinal cord injury
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Restorative neurology and neuroscience ; 34 (2016), 4. - S. 603-613. - IOS Press. - ISSN 0922-6028. - eISSN 1878-3627
Zusammenfassung
Purpose: Spinal cord injury (SCI), a profound impairment of sensorimotor functions, is often associated with pain related phenomena, including mechanical allodynia, a condition in which non-painful tactile sensation is perceived as pain. Pain and somatic sensation are undeniable markers of normal bodily awareness. However, the mechanism by which they are integrated into a coherent sense of the bodily self remains largely unclear. In this study, we investigated the effect of high-level multisensory manipulation on subjective experiences of pain, touch, and body-ownership. Methods: We administered visuo-tactile stimulation based on the rubber hand illusion. In a longitudinal study, we compared the strength of the illusion in a male with SCI, who initially had lost somatosensation in all his fingers, but a few months later reported signs of tactile allodynia restricted to the left C6-dermatome. Results: After the restoration of some somatosensation, even if it were painful, synchronous but not asynchronous visuo-tactile stimulation induced body illusion. Previously painful stimuli were temporarily perceived as less painful, and the patient further regained tactile sensations in adjacent numb areas. Conclusions: The sensations of touch and pain are mutually influenced and inextricably linked to a coherent representation of one’s own body. Multisensory manipulations affecting the perception and representation of the body might thus offer a powerful opportunity to mitigate nociceptive and somatic abnormalities.
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Fachgebiet (DDC)
150 Psychologie
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Bodily illusions, somatosensory perception, pain, allodynia, spinal cord injury, rehabilitation, analgesia
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PAZZAGLIA, Mariella, Patrick HAGGARD, Giorgio SCIVOLETTO, Marco MOLINARI, Bigna LENGGENHAGER, 2016. Pain and somatic sensation are transiently normalized by illusory body ownership in a patient with spinal cord injury. In: Restorative neurology and neuroscience. IOS Press. 34(4), pp. 603-613. ISSN 0922-6028. eISSN 1878-3627. Available under: doi: 10.3233/RNN-150611BibTex
@article{Pazzaglia2016somat-57230, year={2016}, doi={10.3233/RNN-150611}, title={Pain and somatic sensation are transiently normalized by illusory body ownership in a patient with spinal cord injury}, number={4}, volume={34}, issn={0922-6028}, journal={Restorative neurology and neuroscience}, pages={603--613}, author={Pazzaglia, Mariella and Haggard, Patrick and Scivoletto, Giorgio and Molinari, Marco and Lenggenhager, Bigna} }
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