Effective approach to character input for novice BCI users

A brain-computer interface (BCI) character input experiment focusing on participants' BCI intelligibility was performed. In theory, a BCI can be operated by anyone if cognitive activity is possible. However, individual differences clearly occur in practice. Therefore, we supposed that this diff...

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Bibliographic Details
Published in2015 10th Asia-Pacific Symposium on Information and Telecommunication Technologies (APSITT) pp. 1 - 3
Main Authors Koizumi, Yuma, Ijichi, Yuki, Tanaka, Hisaya, Otera, Ayumi, Takahashi, Kayoko, Fukuda, Michinari, Asai, Noriyoshi
Format Conference Proceeding
LanguageEnglish
Published IEICE 01.08.2015
Subjects
Accuracy
BCI
BCI intelligibility
Brain modeling
Communications technology
Electroencephalography
Hospitals
Mathematical model
P300 Speller
Training
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Summary:A brain-computer interface (BCI) character input experiment focusing on participants' BCI intelligibility was performed. In theory, a BCI can be operated by anyone if cognitive activity is possible. However, individual differences clearly occur in practice. Therefore, we supposed that this difference was related to BCI intelligibility. In a previous study, BCI experts and BCI novice users were compared. Therefore, in this study, we compared three types of subjects: experts, novice users, and novice users who received pre-guidance. The preguidance provided instructions about the tips, tricks, and traps of BCI operation. As a result, the classification rate was 80% or more, in all groups. However, high accuracy was only produced by the group that had BCI intelligibility. The accuracy results for novice users who did not receive pre-guidance was 13.6%, the results for experts was 62.4%, and the results for novice users who received pre-guidance was 71.1%. From these results, the effectiveness of pre-guidance for a novice user was demonstrated.
DOI:10.1109/APSITT.2015.7217083