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The effects of semantic congruency: a research of audiovisual P300-speller
| Content Provider | Semantic Scholar |
|---|---|
| Author | Cao, Yong An, Xingwei Ke, Yufeng Jiang, Jin Yang, Hanjun Chen, Yuqian Jiao, Xuejun Qi, Hongzhi Ming, Dong |
| Copyright Year | 2017 |
| Abstract | BackgroundOver the past few decades, there have been many studies of aspects of brain–computer interface (BCI). Of particular interests are event-related potential (ERP)-based BCI spellers that aim at helping mental typewriting. Nowadays, audiovisual unimodal stimuli based BCI systems have attracted much attention from researchers, and most of the existing studies of audiovisual BCIs were based on semantic incongruent stimuli paradigm. However, no related studies had reported that whether there is difference of system performance or participant comfort between BCI based on semantic congruent paradigm and that based on semantic incongruent paradigm.MethodsThe goal of this study was to investigate the effects of semantic congruency in system performance and participant comfort in audiovisual BCI. Two audiovisual paradigms (semantic congruent and incongruent) were adopted, and 11 healthy subjects participated in the experiment. High-density electrical mapping of ERPs and behavioral data were measured for the two stimuli paradigms.ResultsThe behavioral data indicated no significant difference between congruent and incongruent paradigms for offline classification accuracy. Nevertheless, eight of the 11 participants reported their priority to semantic congruent experiment, two reported no difference between the two conditions, and only one preferred the semantic incongruent paradigm. Besides, the result indicted that higher amplitude of ERP was found in incongruent stimuli based paradigm.ConclusionsIn a word, semantic congruent paradigm had a better participant comfort, and maintained the same recognition rate as incongruent paradigm. Furthermore, our study suggested that the paradigm design of spellers must take both system performance and user experience into consideration rather than merely pursuing a larger ERP response. |
| Starting Page | 73 |
| Ending Page | 523 |
| Page Count | 451 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://biomedical-engineering-online.biomedcentral.com/track/pdf/10.1186/s12938-017-0381-4?site=biomedical-engineering-online.biomedcentral.com |
| PubMed reference number | 28743262v1 |
| Alternate Webpage(s) | https://doi.org/10.1186/s12938-017-0381-4 |
| DOI | 10.1186/s12938-017-0381-4 |
| Journal | Biomedical engineering online |
| Volume Number | 16 |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Brain Neoplasms Brain-Computer Interfaces Entity Name Part Qualifier - adopted Hearing problem Interface Device Component Large interest |
| Content Type | Text |
| Resource Type | Article |
