Phantom limb perception interferes with motor imagery after unilateral upper-limb amputation.

Scientific Reports
Yuanyuan LyuShanbao Tong

Abstract

A potential contributor to impaired motor imagery in amputees is an alteration of the body schema as a result of the presence of a phantom limb. However, the nature of the relationship between motor imagery and phantom experiences remains unknown. In this study, the influence of phantom limb perception on motor imagery was investigated using a hand mental rotation task by means of behavioral and electrophysiological measures. Compared with healthy controls, significantly prolonged response time for both the intact and missing hand were observed specifically in amputees who perceived a phantom limb during the task but not in amputees without phantom limb perception. Event-related desynchronization of EEG in the beta band (beta-ERD) in central and parietal areas showed an angular disparity specifically in amputees with phantom limb perception, with its source localized in the right inferior parietal lobule. The response time as well as the beta-ERD values were significantly positively correlated with phantom vividness. Our results suggest that phantom limb perception during the task is an important interferential factor for motor imagery after amputation and the interference might be related to a change of the body representation...Continue Reading

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Citations

Mar 21, 2017·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Yuanyuan LyuShanbao Tong
May 11, 2017·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Xiaoli GuoShanbao Tong
Jul 31, 2018·Pain Research & Management : the Journal of the Canadian Pain Society = Journal De La Société Canadienne Pour Le Traitement De La Douleur·Xaver FuchsRobin Bekrater-Bodmann
Oct 21, 2020·Journal of Neural Engineering·Luke E OsbornNitish V Thakor
Jul 20, 2021·Frontiers in Human Neuroscience·Zu-Qiang XiangDe-Long Zhang
Sep 8, 2021·European Journal of Pain : EJP·Emma H Beisheim-RyanJaclyn M Sions

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Methods Mentioned

BETA
amputation

Software Mentioned

R
sLORETA
BrainVision Analyzer
AlphaSim
prime
Standardized Low Resolution Electromagnetic Tomography ( sLORE...
MATLAB
MIQ

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