User’s Self-Prediction of Performance in Motor Imagery Brain–Computer Interface
Performance variation is a critical issue in motor imagery brain–computer interface (MI-BCI), and various neurophysiological, psychological, and anatomical correlates have been reported in the literature. Although the main aim of such studies is to predict MI-BCI performance for the prescreening of...
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doaj-ea18c5a8844d4d2e84628a3a7fb5c9502020-11-25T02:55:50ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612018-02-011210.3389/fnhum.2018.00059304371User’s Self-Prediction of Performance in Motor Imagery Brain–Computer InterfaceMinkyu Ahn0Hohyun Cho1Sangtae Ahn2Sung C. Jun3School of Computer Science and Electrical Engineering, Handong Global University, Pohang, South KoreaWadsworth Center, New York State Department of Health, Albany, NY, United StatesDepartment of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, United StatesSchool of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, South KoreaPerformance variation is a critical issue in motor imagery brain–computer interface (MI-BCI), and various neurophysiological, psychological, and anatomical correlates have been reported in the literature. Although the main aim of such studies is to predict MI-BCI performance for the prescreening of poor performers, studies which focus on the user’s sense of the motor imagery process and directly estimate MI-BCI performance through the user’s self-prediction are lacking. In this study, we first test each user’s self-prediction idea regarding motor imagery experimental datasets. Fifty-two subjects participated in a classical, two-class motor imagery experiment and were asked to evaluate their easiness with motor imagery and to predict their own MI-BCI performance. During the motor imagery experiment, an electroencephalogram (EEG) was recorded; however, no feedback on motor imagery was given to subjects. From EEG recordings, the offline classification accuracy was estimated and compared with several questionnaire scores of subjects, as well as with each subject’s self-prediction of MI-BCI performance. The subjects’ performance predictions during motor imagery task showed a high positive correlation (r = 0.64, p < 0.01). Interestingly, it was observed that the self-prediction became more accurate as the subjects conducted more motor imagery tasks in the Correlation coefficient (pre-task to 2nd run: r = 0.02 to r = 0.54, p < 0.01) and root mean square error (pre-task to 3rd run: 17.7% to 10%, p < 0.01). We demonstrated that subjects may accurately predict their MI-BCI performance even without feedback information. This implies that the human brain is an active learning system and, by self-experiencing the endogenous motor imagery process, it can sense and adopt the quality of the process. Thus, it is believed that users may be able to predict MI-BCI performance and results may contribute to a better understanding of low performance and advancing BCI.http://journal.frontiersin.org/article/10.3389/fnhum.2018.00059/fullBCI-illiteracyperformance variationpredictionmotor imageryBCI |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Minkyu Ahn Hohyun Cho Sangtae Ahn Sung C. Jun |
spellingShingle |
Minkyu Ahn Hohyun Cho Sangtae Ahn Sung C. Jun User’s Self-Prediction of Performance in Motor Imagery Brain–Computer Interface Frontiers in Human Neuroscience BCI-illiteracy performance variation prediction motor imagery BCI |
author_facet |
Minkyu Ahn Hohyun Cho Sangtae Ahn Sung C. Jun |
author_sort |
Minkyu Ahn |
title |
User’s Self-Prediction of Performance in Motor Imagery Brain–Computer Interface |
title_short |
User’s Self-Prediction of Performance in Motor Imagery Brain–Computer Interface |
title_full |
User’s Self-Prediction of Performance in Motor Imagery Brain–Computer Interface |
title_fullStr |
User’s Self-Prediction of Performance in Motor Imagery Brain–Computer Interface |
title_full_unstemmed |
User’s Self-Prediction of Performance in Motor Imagery Brain–Computer Interface |
title_sort |
user’s self-prediction of performance in motor imagery brain–computer interface |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Human Neuroscience |
issn |
1662-5161 |
publishDate |
2018-02-01 |
description |
Performance variation is a critical issue in motor imagery brain–computer interface (MI-BCI), and various neurophysiological, psychological, and anatomical correlates have been reported in the literature. Although the main aim of such studies is to predict MI-BCI performance for the prescreening of poor performers, studies which focus on the user’s sense of the motor imagery process and directly estimate MI-BCI performance through the user’s self-prediction are lacking. In this study, we first test each user’s self-prediction idea regarding motor imagery experimental datasets. Fifty-two subjects participated in a classical, two-class motor imagery experiment and were asked to evaluate their easiness with motor imagery and to predict their own MI-BCI performance. During the motor imagery experiment, an electroencephalogram (EEG) was recorded; however, no feedback on motor imagery was given to subjects. From EEG recordings, the offline classification accuracy was estimated and compared with several questionnaire scores of subjects, as well as with each subject’s self-prediction of MI-BCI performance. The subjects’ performance predictions during motor imagery task showed a high positive correlation (r = 0.64, p < 0.01). Interestingly, it was observed that the self-prediction became more accurate as the subjects conducted more motor imagery tasks in the Correlation coefficient (pre-task to 2nd run: r = 0.02 to r = 0.54, p < 0.01) and root mean square error (pre-task to 3rd run: 17.7% to 10%, p < 0.01). We demonstrated that subjects may accurately predict their MI-BCI performance even without feedback information. This implies that the human brain is an active learning system and, by self-experiencing the endogenous motor imagery process, it can sense and adopt the quality of the process. Thus, it is believed that users may be able to predict MI-BCI performance and results may contribute to a better understanding of low performance and advancing BCI. |
topic |
BCI-illiteracy performance variation prediction motor imagery BCI |
url |
http://journal.frontiersin.org/article/10.3389/fnhum.2018.00059/full |
work_keys_str_mv |
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