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).
Publications
Dynamics of the perception and EEG signals triggered by tonic warm and cool stimulation
Mulders D, de Bodt C, Lejeune N, Courtin A, Liberati G, Verleysen M, Mouraux A.
Journal of Neurophysiology
Early gamma-oscillations as correlate of localized nociceptive processing in primary sensorimotor cortex
Heid C, Mouraux A, Treede RD, Schuh-Hofer S, Rupp A, Baumgärtner U.
Tonic thermonociceptive stimulation selectively modulates ongoing neural oscillations in the human posterior insula: evidence from intracerebral EEG
Liberati G, Algoet M, Ferrao Santos S, Ribeiro-Vaz JG, Raftopoulos C, Mouraux A.
Nature: Scientific Reports
Habituation of phase-locked local field potentials and gamma-band oscillations recorded from the human insula
Liberati G, Algoet M, Klöcker A, Ferrao Santos S, Ribeiro-Vaz JG, Raftopoulos C, Mouraux A.
Gamma-band oscillations preferential for nociception can be recorded in the human insula
Liberati G, Klöcker A, Algoet M, Mulders D, Safronova MM, Ferrao Santos S, Vaz JG, Raftopoulos C, Mouraux A.
EEG frequency tagging using ultra-slow periodic heat stimulation of the skin reveals cortical activity specifically related to C fiber thermonociceptors
Colon E, Liberati G, Mouraux A.
Single-trial time-frequency analysis of electrocortical signals: baseline correction and beyond
Hu L, Xiao P, Zhang ZG, Mouraux A, Iannetti GD.
Gamma-band oscillations in the primary somatosensory cortex - a direct and obligatory correlate of subjective pain intensity
Zhang ZG, Lu H, Hung YS, Mouraux A, Iannetti GD.
