Stimulus Presentation and Analysis Methods for Improving Discrimination Accuracy in P300 Speller

被引：0
|
作者：
Hattori, Erika [1 ,2 ]
Ogoshi, Sakiko [3 ]
Saito, Yukie [1 ]
Ogoshi, Yasuhiro [1 ]
机构：
[1] Univ Fukui, Grad Sch Engn, Dept Human & Artificial Intelligent Syst, 3-9-1 Bunkyo, Fukui 9108507, Japan
[2] NTT Fieldtechno Corp, Network Equipment Dept, Serv Engn Dept, 4 15 82 Higashinodacho Miyakojima ku, Osaka, Osaka 5340024, Japan
[3] Fukui Coll, Natl Inst Technol, Dept Elect & Informat Engn, Sabae, Fukui 9168507, Japan
来源：
SENSORS AND MATERIALS | 2023年 / 35卷 / 11期
关键词：
brain-machine interface; electroencephalogram; event-related potential; P300; speller;
D O I：
10.18494/SAM4479
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The brain-machine interface (BMI) has a number of electroencephalogram (EEG) input support tools, including the P300 speller, which uses the event-related potential (ERP), P300. This potential is known to be affected by psychological variables such as the user's attention and discrimination accuracy. In our study, we investigated the effect of fatigue caused by mental load on discrimination accuracy. P300 can be divided into two types: P3a, which occurs in the frontal center, and P3b, which occurs in the parietal center. As there are few studies using P3a as a discrimination method for P300, we included P3a in the discrimination index to check discrimination accuracy. The results showed that the discrimination index using P3a was generally lower than that using P3b in terms of percentage of correct answers, but some participants showed a high percentage of correct answers, which may lead to an improvement in discrimination rate depending on individual characteristics.
引用
收藏
页码：3897 / 3914
页数：18
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