Behavioral and Electrocortical Response to a Sensorimotor Conflict in Individuals with Fibromyalgia - CNRS - Centre national de la recherche scientifique Access content directly
Journal Articles Brain Sciences Year : 2023

Behavioral and Electrocortical Response to a Sensorimotor Conflict in Individuals with Fibromyalgia

Tania Augière
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  • PersonId : 1261056
Martin Simoneau
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Anne Marie Pinard
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  • PersonId : 1261057
Jean Blouin
Catherine Mercier
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  • PersonId : 1261058

Abstract

People with fibromyalgia have been shown to experience more somatosensory disturbances than pain-free controls during sensorimotor conflicts (i.e., incongruence between visual and somatosensory feedback). Sensorimotor conflicts are known to disturb the integration of sensory information. This study aimed to assess the cerebral response and motor performance during a sensorimotor conflict in people with fibromyalgia. Twenty participants with fibromyalgia and twentythree pain-free controls performed a drawing task including visual feedback that was either congruent with actual movement (and thus with somatosensory information) or incongruent with actual movement (i.e., conflict). Motor performance was measured according to tracing error, and electrocortical activity was recorded using electroencephalography. Motor performance was degraded during conflict for all participants but did not differ between groups. Time-frequency analysis showed that the conflict was associated with an increase in theta power (4-8 Hz) at conflict onset over the left posterior parietal cortex in participants with fibromyalgia but not in controls. This increase in theta suggests a stronger detection of conflict in participants with fibromyalgia, which was not accompanied by differences in motor performance in comparison to controls. This points to dissociation in individuals with fibromyalgia between an altered perception of action and a seemingly unaltered control of action.

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Neuroscience
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Dates and versions

hal-04123766 , version 1 (09-06-2023)

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Tania Augière, Martin Simoneau, Clémentine Brun, Anne Marie Pinard, Jean Blouin, et al.. Behavioral and Electrocortical Response to a Sensorimotor Conflict in Individuals with Fibromyalgia. Brain Sciences, 2023, ⟨10.3390/brainsci13060931⟩. ⟨hal-04123766⟩

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CNRS UNIV-AMU
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