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Degraded EEG Decoding of Wrist Movements in Absence of Kinaesthetic Feedback

Lookup NU author(s): Dr Ferran Galan Moles, Dr Mark Baker, Dr Kai Alter, Professor Stuart Baker

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Abstract

A major assumption of brain-machine interface research is that patients with disconnected neural pathways can still volitionally recall precise motor commands that could be decoded for naturalistic prosthetic control. However, the disconnected condition of these patients also blocks kinaesthetic feedback from the periphery, which has been shown to regulate centrally generated output responsible for accurate motor control. Here, we tested how well motor commands are generated in the absence of kinaesthetic feedback by decoding hand movements from human scalp electroencephalography in three conditions: unimpaired movement, imagined movement, and movement attempted during temporary disconnection of peripheral afferent and efferent nerves by ischemic nerve block. Our results suggest that the recall of cortical motor commands is impoverished in the absence of kinaesthetic feedback, challenging the possibility of precise naturalistic cortical prosthetic control. Hum Brain Mapp 36:643-654, 2015. (c) 2014 The Authors. Human Brain Mapping Published by Wiley Periodicals, Inc.


Publication metadata

Author(s): Galan F, Baker MR, Alter K, Baker SN

Publication type: Article

Publication status: Published

Journal: Human Brain Mapping

Year: 2015

Volume: 36

Issue: 2

Pages: 643-654

Print publication date: 01/02/2015

Online publication date: 12/10/2014

Acceptance date: 29/09/2014

Date deposited: 07/04/2015

ISSN (print): 1065-9471

ISSN (electronic): 1097-0193

Publisher: John Wiley & Sons, Inc.

URL: http://dx.doi.org/10.1002/hbm.22653

DOI: 10.1002/hbm.22653


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