Effect of inverted faces as visual stimuli on the performance of the hybrid SSVEP + P300 brain computer interface.
Brain Res
; 1841: 149092, 2024 Oct 15.
Article
em En
| MEDLINE
| ID: mdl-38897536
ABSTRACT
INTRODUCTION:
This study proposes a hybrid brain-computer interface (BCI) system that simultaneously evokes steady-state visual evoked potentials (SSVEP) and event-related potentials (P300). The goal of this study was to improve the performance of the current hybrid SSVEP + P300 BCI systems by incorporating inverted faces into visual stimuli.METHODS:
In this study, upright and inverted faces were added to visual stimulus to elicit stronger cortical responses in a hybrid SSVEP + P300 BCI. We also considered triggering the P300 signals with facial stimuli and the SSVEP signals with non-facial stimuli. We have tested four paradigms the upright face paradigm (UF), the inverted face paradigm (IF), the upright face and flicker paradigm (UFF), and the inverted face and flicker paradigm (IFF). RESULTS ANDCONCLUSIONS:
The results showed that the IFF paradigm evoked more robust cortical responses, which led to enhanced system accuracy and ITR. The IFF paradigm had an average accuracy of 96.6% and a system communication rate of 26.45 bits per second. The UFF paradigm is the best candidate for BCI applications among other paradigms because it provides maximum comfort while maintaining a reasonable ITR.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Estimulação Luminosa
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Potenciais Evocados P300
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Eletroencefalografia
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Potenciais Evocados Visuais
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Interfaces Cérebro-Computador
Limite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
Brain Res
Ano de publicação:
2024
Tipo de documento:
Article