Visuomotor impairments in Complex Regional Pain Syndrome during pointing tasks
| Autor: | Olivier Barbier, Anne Berquin, Dominique Mouraux, Charlotte Verfaille, Yves Rossetti, Xavier Libouton, Valéry Legrain, Virginie Fraselle, Lieve Filbrich |
|---|---|
| Přispěvatelé: | UCL - SSS/IONS/COSY - Systems & cognitive Neuroscience |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
genetic structures media_common.quotation_subject Sensory system Task (project management) Upper Extremity 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation 030202 anesthesiology Perception Task Performance and Analysis medicine Humans media_common Proprioception Visually guided Cognition medicine.disease Anesthesiology and Pain Medicine Complex regional pain syndrome Neurology Visuospatial perception Neurology (clinical) Psychology Complex Regional Pain Syndromes 030217 neurology & neurosurgery psychological phenomena and processes |
| Zdroj: | Pain, Vol. 162, p. 811-822 (2021) |
| Popis: | Complex regional pain syndrome (CRPS) is thought to be characterized by cognitive deficits affecting patients' ability to represent, perceive, and use their affected limb as well as its surrounding space. This has been tested, among others, by straight-ahead tasks testing oneself's egocentric representation, but such experiments lead to inconsistent results. Because spatial cognitive abilities encompass various processes, we completed such evaluations by varying the sensory inputs used to perform the task. Complex regional pain syndrome and matched control participants were asked to assess their own body midline either visually (ie, by means of a moving visual cue) or manually (ie, by straight-ahead pointing with one of their upper limbs) and to reach and point to visual targets at different spatial locations. Although the 2 former tasks only required one single sensory input to be performed (ie, either visual or proprioceptive), the latter task was based on the ability to coordinate perception of the position of one's own limb with visuospatial perception. However, in this latter task, limb position could only be estimated by proprioception, as vision of the limb was prevented. Whereas in the 2 former tasks CRPS participants' performance was not different from that of controls, they made significantly more deviations errors during the visuospatial task, regardless of the limb used to point or the direction of pointing. Results suggest that CRPS patients are not specifically characterized by difficulties in representing their body but, more particularly, in integrating somatic information (ie, proprioception) during visually guided movements of the limb. |
| Databáze: | OpenAIRE |
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