Electrophysiological investigation of the contribution of attention to altered pain inhibition processes in patients with irritable bowel syndrome

Rustamov, N., Wagenaar-Tison, A., Doyer, E. et Piché, M. (2020). Electrophysiological investigation of the contribution of attention to altered pain inhibition processes in patients with irritable bowel syndrome. Journal of Physiological Sciences, 70 (1). ISSN 1880-6546 DOI 10.1186/s12576-020-00774-x

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Résumé

Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder associated with chronic abdominal pain and altered pain processing. The aim of this study was to examine whether attentional processes contribute to altered pain inhibition processes in patients with IBS. Nine female patients with IBS and nine age-/sex-matched controls were included in a pain inhibition paradigm using counter-stimulation and distraction with electroencephalography. Patients with IBS showed no inhibition of pain-related brain activity by heterotopic noxious counter-stimulation (HNCS) or selective attention. In the control group, HNCS and selective attention decreased the N100, P260 and high-gamma oscillation power. In addition, pain-related high-gamma power in sensorimotor, anterior cingulate and left dorsolateral prefrontal cortex was decreased by HNCS and selective attention in the control group, but not in patients with IBS. These results indicate that the central pain inhibition deficit in IBS reflects interactions between several brain processes related to pain and attention. © 2020 The Author(s).

Type de document:	Article
Mots-clés libres:	CPM DNIC Electroencephalography Irritable bowel syndrome Pain Selective attention
Date de dépôt:	26 avr. 2021 18:11
Dernière modification:	01 mars 2023 20:26
Version du document déposé:	Version officielle de l'éditeur
URI:	https://depot-e.uqtr.ca/id/eprint/9576

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