Pain-related oscillations
Nociceptive stimuli induce changes in the magnitude of oscillatory brain activity which is not phase locked, possible related to nociception or pain. This induced activity was found as a brief increase in gamma power in the 40-100 Hz frequency range, whose magnitude appears to correlate better with subjective pain intensity than the amplitude of phase-locked evoked potentials and could thus be a more specific marker for nociception. Besides gamma band oscillations (GBOs), nociceptive stimuli also induce changes in the magnitude of oscillations in other frequency bands, such as a suppression of alpha-band (7-13 Hz) and beta-band oscillations (13-30 Hz), a respective rebound of beta-band oscillations, and an increase in power of low-frequency delta oscillations (0-5 Hz).

Researchers involved
Publications
2020
Insular responses to transient painful and non-painful thermal and mechanical spinothalamic stimuli recorded using intracerebral EEG
Nature: Scientific Reports
Liberati G, Mulders D, Algoet M, van den Broeke EN, Ferrao Santos S, Ribeiro Vaz JG, Raftopoulos C, Mouraux A.
10: 22319
2020
Dynamics of the perception and EEG signals triggered by tonic warm and cool stimulation
PLoS ONE
Mulders D, de Bodt C, Lejeune N, Dufour A, Verleysen M, Mouraux A.
15(4):e0231698
2020
Early gamma-oscillations as correlate of localized nociceptive processing in primary sensorimotor cortex
Journal of Neurophysiology
Heid C, Mouraux A, Treede RD, Schuh-Hofer S, Rupp A, Baumgärtner U.
123(5):1711-1726
2018
Tonic thermonociceptive stimulation selectively modulates ongoing neural oscillations in the human posterior insula: evidence from intracerebral EEG
Neuroimage
Liberati G, Algoet M, Ferrao Santos S, Ribeiro-Vaz JG, Raftopoulos C, Mouraux A.
188:70-83
2018
Habituation of phase-locked local field potentials and gamma-band oscillations recorded from the human insula
Nature: Scientific Reports
Liberati G, Algoet M, Klöcker A, Ferrao Santos S, Ribeiro-Vaz JG, Raftopoulos C, Mouraux A.
8(1): 8265
2017
Gamma-band oscillations preferential for nociception can be recorded in the human insula
Cerebral Cortex
Liberati G, Klöcker A, Algoet M, Mulders D, Safronova MM, Ferrao Santos S, Vaz JG, Raftopoulos C, Mouraux A.
28(10):3650-3664.
2016
EEG frequency tagging using ultra-slow periodic heat stimulation of the skin reveals cortical activity specifically related to C fiber thermonociceptors
Neuroimage
Colon E, Liberati G, Mouraux A.
146:266-274
2014
Single-trial time-frequency analysis of electrocortical signals: baseline correction and beyond
Neuroimage
Hu L, Xiao P, Zhang ZG, Mouraux A, Iannetti GD.
84:876-8
2012
Gamma-band oscillations in the primary somatosensory cortex - a direct and obligatory correlate of subjective pain intensity
Journal of Neuroscience
Zhang ZG, Lu H, Hung YS, Mouraux A, Iannetti GD.
32(22): 7429-38