May 6, 2014

Missing kinaesthesia challenges precise naturalistic cortical prosthetic control

BioRxiv : the Preprint Server for Biology
Ferran GalánStuart N Baker

Abstract

A major assumption of brain-machine interface (BMI) 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 (EEG) 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 absence of kinaesthetic feedback, challenging the possibility of precise naturalistic cortical prosthetic control.

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Mentioned in this Paper

Ischemia
Nervousness
Research
Entire Scalp
Electroencephalography
Neuroma
Brain
Scalp Structure
Kinesthesis
Structure of Cortex of Kidney

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