RT Journal Article
T1 Performance analysis with different types of visual stimuli in a BCI-Based Speller under an RSVP paradigm
A1 Ron-Angevin, Ricardo
A1 Medina-Juliá, María Teresa
A1 Fernández-Rodríguez, Álvaro
A1 Velasco-Álvarez, Francisco Javier
A1 André, Jean-Marc
A1 Lespinet-Najib, Véronique
A1 García, Liliana
A2 Liu, Jian K.
K1 Interacción hombre-ordenador
K1 Interfaces de ordenadores
AB Brain-Computer Interface (BCI) systems enable an alternative communication channel for severely-motor disabled patients to interact with their environment using no muscular movements. In recent years, the importance of research into non-gaze dependent brain-computer interface paradigms has been increasing, in contrast to the most frequently studied BCI-based speller paradigm (i.e., row-column presentation, RCP). Several visual modifications that have already been validated under the RCP paradigm for communication purposes have not been validated under the most extended non-gaze dependent rapid serial visual presentation (RSVP) paradigm. Thus, in the present study, three different sets of stimuli were assessed under RSVP, with the following communication features: white letters (WL), famous faces (FF), neutral pictures (NP). Eleven healthy subjects participated in this experiment, in which the subjects had to go through a calibration phase, an online phase and, finally, a subjective questionnaire completion phase. The results showed that the FF and NP stimuli promoted better performance in the calibration and online phases, being slightly better in the FF paradigm. Regarding the subjective questionnaires, again both FF and NP were preferred by the participants in contrast to the WL stimuli, but this time the NP stimuli scored slightly higher. These findings suggest that the use of FF and NP for RSVP-based spellers could be beneficial to increase information transfer rate in comparison to the most frequently used letter-based stimuli and could represent a promising communication system for individuals with altered ocular-motor function.
PB Frontiers Media
YR 2021
FD 2021-01-05
LK https://hdl.handle.net/10630/36164
UL https://hdl.handle.net/10630/36164
LA eng
NO Ron-Angevin R, Medina-Juliá MT, Fernández-Rodríguez Á, Velasco-Álvarez F, Andre J-M, Lespinet-Najib V and Garcia L (2021) Performance Analysis With Different Types of Visual Stimuli in a BCI-Based Speller Under an RSVP Paradigm. Front. Comput. Neurosci. 14:587702. doi: 10.3389/fncom.2020.587702
NO This work was partially supported by the project SICCAU: RTI2018-100912-B-I00 (MCIU/AEI/FEDER, UE) and the University of Malaga (Universidad de Málaga). Furthermore, this project has received support from Bordeaux INP in the framework of the guest professor call obtained in 2018-2019.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026