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553

Title *

The effect of stimulus saliency on the modulation of pain-related ongoing neural oscillations: a Registered Reportuse asterix (*) to get italics

Authors *

Chiara Leu, Sébastien Forest, Valéry Legrain, Giulia LiberatiPlease use the format "First name initials family name" as in "Marie S. Curie, Niels H. D. Bohr, Albert Einstein, John R. R. Tolkien, Donna T. Strickland"

Year *

2023

Picture

Abstract *

Ongoing oscillations have been shown to be modulated in different frequency bands following phasic, tonic as well as periodic thermonociceptive stimulation. Yet, it remains unclear whether these modulations are related to pain perception, saliency (i.e., the ability of a stimulus to stand out from its environment) or solely the intensity of these stimuli. To better understand this relationship, we will combine a sustained periodic thermonociceptive stimulation paradigm including periodic oddball events with a frequency-tagging analysis approach. Oddballs will be delivered either at a higher intensity or lower intensity (control condition) than baseline stimuli. This will allow us to disentangle effects of saliency and intensity and investigate its relationship with pain perception and the modulation of ongoing oscillations. Continuous ratings of pain perception will be collected during the stimulation to track participants’ perception. We expect to see a modulation of the EEG amplitude at the frequency of the oddball in both conditions in the theta, alpha and beta frequency bands. If the modulation is mainly driven by the intensity of the stimulus, we expect that the oddball in the control condition will have a lower amplitude than the normal oddball. Conversely, if the modulation is reflecting the saliency of a stimulus, we expect the modulation at the frequency of the oddball to be similar across conditions.

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Keywords (optional)

EEG, ongoing oscillations, saliency, pain, nociception, frequency tagging, oddball

Methods that require specific expertise (optional)

NonePlease indicate the methods that may require specialised expertise during the peer review process (use a comma to separate various required expertises).

Thematic fields *

Life Sciences, Medical Sciences

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Submission date

2023-09-06 15:15:19

Recommender

Zoltan Dienes

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