NDLI: Neural correlates of learning in an electrocorticographic motor-imagery brain-computer interface

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Neural correlates of learning in an electrocorticographic motor-imagery brain-computer interface

Content Provider	Scilit
Author	Blakely, Tim M. Olson, Jared D. Miller, Kai J. Rao, Rajesh P. N. Ojemann, Jeffrey G.
Copyright Year	2014
Description	Human subjects can learn to control a one-dimensional electrocorticographic (ECoG) brain-computer interface (BCI) using modulation of primary motor (M1) high-gamma activity (signal power in the 75–200 Hz range). However, the stability and dynamics of the signals over the course of new BCI skill acquisition have not been investigated. In this study, we report 3 characteristic periods in evolution of the high-gamma control signal during BCI training: initial, low task accuracy with corresponding low power modulation in the gamma spectrum, followed by a second period of improved task accuracy with increasing average power separation between activity and rest, and a final period of high task accuracy with stable (or decreasing) power separation and decreasing trial-to-trial variance. These findings may have implications in the design and implementation of BCI control algorithms.
Related Links	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4295512/pdf
Ending Page	157
Page Count	11
Starting Page	147
ISSN	2326263X
e-ISSN	23262621
DOI	10.1080/2326263x.2014.954183
Journal	Brain-Computer Interfaces
Issue Number	3-4
Volume Number	1
Language	English
Publisher	Informa UK Limited
Publisher Date	2014-10-02
Access Restriction	Open
Subject Keyword	Journal: Brain-computer Interfaces Neurosciences Brain-computer Interface (bci) Brain-machine Interface (bmi) Motor Learning Motor Imagery High Gamma Electrocorticography (ecog)
Content Type	Text
Resource Type	Article
Subject	Behavioral Neuroscience Electrical and Electronic Engineering Human-Computer Interaction Biomedical Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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