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Spatial sensorimotor mismatch between the motor command and somatosensory feedback decreases motor cortical excitability. A transcranial magnetic stimulation‐virtual reality study

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Title: Spatial sensorimotor mismatch between the motor command and somatosensory feedback decreases motor cortical excitability. A transcranial magnetic stimulation‐virtual reality study
Authors: Girondini M., Montanaro M., Lega C., Gallace A.
Contributors: Girondini, Matteo, Montanaro, Massimo, Lega, Carlotta, Gallace, Alberto
Source: The European journal of neuroscience, vol. 60, no. 6, pp. 5348-5361
Publisher Information: Wiley, 2024.
Publication Year: 2024
Subject Terms: Male, Adult, 0301 basic medicine, Movement, somatosensory system, Young Adult, 03 medical and health sciences, 0302 clinical medicine, Feedback, Sensory, Humans, sensorimotor integration, Virtual Reality, Female, Transcranial Magnetic Stimulation/methods, Feedback, Sensory/physiology, Motor Cortex/physiology, Evoked Potentials, Motor/physiology, Neuronal Plasticity/physiology, Cortical Excitability/physiology, Movement/physiology, Psychomotor Performance/physiology, motor cortical excitability, sensorimotor functional plasticity, virtual reality, Neuronal Plasticity, Motor Cortex, Evoked Potentials, Motor, Transcranial Magnetic Stimulation, Cortical Excitability, Psychomotor Performance
Description: Effective control of movement predominantly depends on the exchange and integration between sensory feedback received by our body and motor command. However, the precise mechanisms governing the adaptation of the motor system's response to altered somatosensory signals (i.e., discrepancies between an action performed and feedback received) following movement execution remain largely unclear. In order to address these questions, we developed a unique paradigm using virtual reality (VR) technology. This paradigm can induce spatial incongruence between the motor commands executed by a body district (i.e., moving the right hand) and the resulting somatosensory feedback received (i.e., feeling touch on the left ankle). We measured functional sensorimotor plasticity in 17 participants by assessing the effector's motor cortical excitability (right hand) before and after a 10‐min VR task. The results revealed a decrease in motor cortical excitability of the movement effector following exposure to a 10‐min conflict between the motor output and the somatosensory input, in comparison to the control condition where spatial congruence between the moved body part and the area of the body that received the feedback was maintained. This finding provides valuable insights into the functional plasticity resulting from spatial sensorimotor conflict arising from the discrepancy between the anticipated and received somatosensory feedback following movement execution. The cortical reorganization observed can be attributed to functional plasticity mechanisms within the sensorimotor cortex that are related to establishing a new connection between somatosensory input and motor output, guided by temporal binding and the Hebbian plasticity rule.
Document Type: Article
File Description: application/pdf
Language: English
ISSN: 1460-9568
0953-816X
DOI: 10.1111/ejn.16481
Access URL: https://pubmed.ncbi.nlm.nih.gov/39171623
https://serval.unil.ch/resource/serval:BIB_CC38D51A8540.P001/REF.pdf
https://serval.unil.ch/notice/serval:BIB_CC38D51A8540
http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_CC38D51A85406
Rights: CC BY NC ND
Accession Number: edsair.doi.dedup.....684b05d5c9034903cdef12741548edce
Database: OpenAIRE
Description
Abstract:Effective control of movement predominantly depends on the exchange and integration between sensory feedback received by our body and motor command. However, the precise mechanisms governing the adaptation of the motor system's response to altered somatosensory signals (i.e., discrepancies between an action performed and feedback received) following movement execution remain largely unclear. In order to address these questions, we developed a unique paradigm using virtual reality (VR) technology. This paradigm can induce spatial incongruence between the motor commands executed by a body district (i.e., moving the right hand) and the resulting somatosensory feedback received (i.e., feeling touch on the left ankle). We measured functional sensorimotor plasticity in 17 participants by assessing the effector's motor cortical excitability (right hand) before and after a 10‐min VR task. The results revealed a decrease in motor cortical excitability of the movement effector following exposure to a 10‐min conflict between the motor output and the somatosensory input, in comparison to the control condition where spatial congruence between the moved body part and the area of the body that received the feedback was maintained. This finding provides valuable insights into the functional plasticity resulting from spatial sensorimotor conflict arising from the discrepancy between the anticipated and received somatosensory feedback following movement execution. The cortical reorganization observed can be attributed to functional plasticity mechanisms within the sensorimotor cortex that are related to establishing a new connection between somatosensory input and motor output, guided by temporal binding and the Hebbian plasticity rule.
ISSN:14609568
0953816X
DOI:10.1111/ejn.16481