Gamma band oscillations reflect sensory and affective dimensions of pain

• Verfasst von: Lyu, Yuanyuan [VerfasserIn]
• Verfasst von: Zidda, Francesca [VerfasserIn]
• Verfasst von: Radev, Stefan [VerfasserIn]
• Verfasst von: Liu, Hongcai [VerfasserIn]
• Verfasst von: Guo, Xiaoli [VerfasserIn]
• Verfasst von: Tong, Shanbao [VerfasserIn]
• Verfasst von: Flor, Herta [VerfasserIn]
• Verfasst von: Andoh, Jamila [VerfasserIn]
• Titel: Gamma band oscillations reflect sensory and affective dimensions of pain
• Verf.angabe: Yuanyuan Lyu, Francesca Zidda, Stefan T. Radev, Hongcai Liu, Xiaoli Guo, Shanbao Tong, Herta Flor and Jamila Andoh
• E-Jahr: 2022
• Jahr: 10 January 2022
• Umfang: 11 S.
• Fussnoten: Gesehen am 02.03.2022
• Titel Quelle: Enthalten in: Frontiers in neurology
• Ort Quelle: Lausanne : Frontiers Research Foundation, 2008
• Jahr Quelle: 2022
• Band/Heft Quelle: 12(2022) vom: 10. Jan., Artikel-ID 695187, Seite 1-11
• ISSN Quelle: 1664-2295
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1794401377
• K10plus-PPN:
  Universitätsbibliothek
• Lokale URL UB: Zum Volltext

Abstract

Pain is a multidimensional process, which can be modulated by emotions; however, the mechanisms underlying this modulation are unknown. We used pictures with different emotional valence (negative, positive, and neutral) as primes and applied electrical painful stimuli as targets to healthy participants. We assessed pain intensity and unpleasantness ratings and recorded electroencephalograms (EEGs). We found that pain unpleasantness and not pain intensity ratings were modulated by emotion, with increased ratings for negative and decreased ratings for positive pictures. We also found two consecutive gamma band oscillations (GBOs) related to pain processing from time frequency analyses of the EEG signals. The early GBO had a cortical distribution contralateral to the painful stimulus and its amplitude was positively correlated with intensity and unpleasantness ratings, but not with prime valence. The late GBO had a centroparietal distribution and its amplitude was larger for negative compared to neutral and positive pictures. The emotional modulation effect (negative vs. positive) of the late GBO amplitude was positively correlated with pain unpleasantness. The early GBO might reflect the overall pain perception, possibly involving the thalamocortical circuit, while the late GBO might be related to the affective dimension of pain and top-down-related processes.