Impact of Experimental Tonic Pain on Corrective Motor Responses to Mechanical Perturbations
Joint Authors
Traverse, Elodie
Brun, Clémentine
Harnois, Émilie
Mercier, Catherine
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-07-31
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Movement is altered by pain, but the underlying mechanisms remain unclear.
Assessing corrective muscle responses following mechanical perturbations can help clarify these underlying mechanisms, as these responses involve spinal (short-latency response, 20-50 ms), transcortical (long-latency response, 50-100 ms), and cortical (early voluntary response, 100-150 ms) mechanisms.
Pairing mechanical (proprioceptive) perturbations with different conditions of visual feedback can also offer insight into how pain impacts on sensorimotor integration.
The general aim of this study was to examine the impact of experimental tonic pain on corrective muscle responses evoked by mechanical and/or visual perturbations in healthy adults.
Two sessions (Pain (induced with capsaicin) and No pain) were performed using a robotic exoskeleton combined with a 2D virtual environment.
Participants were instructed to maintain their index in a target despite the application of perturbations under four conditions of sensory feedback: (1) proprioceptive only, (2) visuoproprioceptive congruent, (3) visuoproprioceptive incongruent, and (4) visual only.
Perturbations were induced in either flexion or extension, with an amplitude of 2 or 3 Nm.
Surface electromyography was recorded from Biceps and Triceps muscles.
Results demonstrated no significant effect of the type of sensory feedback on corrective muscle responses, no matter whether pain was present or not.
When looking at the effect of pain on corrective responses across muscles, a significant interaction was found, but for the early voluntary responses only.
These results suggest that the effect of cutaneous tonic pain on motor control arises mainly at the cortical (rather than spinal) level and that proprioception dominates vision for responses to perturbations, even in the presence of pain.
The observation of a muscle-specific modulation using a cutaneous pain model highlights the fact that the impacts of pain on the motor system are not only driven by the need to unload structures from which the nociceptive signal is arising.
American Psychological Association (APA)
Traverse, Elodie& Brun, Clémentine& Harnois, Émilie& Mercier, Catherine. 2020. Impact of Experimental Tonic Pain on Corrective Motor Responses to Mechanical Perturbations. Neural Plasticity،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1203007
Modern Language Association (MLA)
Traverse, Elodie…[et al.]. Impact of Experimental Tonic Pain on Corrective Motor Responses to Mechanical Perturbations. Neural Plasticity No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1203007
American Medical Association (AMA)
Traverse, Elodie& Brun, Clémentine& Harnois, Émilie& Mercier, Catherine. Impact of Experimental Tonic Pain on Corrective Motor Responses to Mechanical Perturbations. Neural Plasticity. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1203007
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1203007