Listar por autor "Medina-Juliá, María Teresa"
Mostrando ítems 1-11 de 11
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Different effects of using pictures as stimuli in a P300 brain-computer interface under rapid serial visual presentation or row-column paradigm
Fernández-Rodríguez, Álvaro
; Medina-Juliá, María Teresa; Velasco-Álvarez, Francisco Javier; Ron-Angevin, Ricardo (Springer Nature, 2021-03-20)
Previous proposals for controlling a P300-based BCI speller have shown an improvement using alternative images instead of letters as target stimuli under a row–column paradigm (RCP). However, the RCP is not suitable for ... -
Effects of spatial stimulus overlap in a visual P300-based brain-computer interface
Fernández-Rodríguez, Álvaro; Medina-Juliá, María Teresa; Velasco-Álvarez, Francisco Javier; Ron-Angevin, Ricardo (Elsevier, 2020-02-18)
The rapid serial visual presentation (RSVP) paradigm seems to be one of the most appropriate for patients using P300-based brain-computer interface applications, since non-ocular movements are required. However, according ... -
Estudio preliminar de la usabilidad de tres tamaños de teclados basados en Interfaces Cerebro-Computador por pacientes con ELA
Medina-Juliá, María Teresa; Fernández-Rodríguez, Álvaro; Velasco-Álvarez, Francisco Javier; Ron-Angevin, Ricardo (2019-07-25)
En referencia a los teclados basados en Interfaces Cerebro Computador que utilizan el biopotencial P300 como señal de control, el tamaño óptimo para personas con discapacidad motora no se ha presentado propiamente. En este ... -
Evaluation of emotional and neutral pictures as flashing stimuli using a P300 brain-computer interface speller
Fernández-Rodríguez, Álvaro; Velasco-Álvarez, Francisco Javier; Medina-Juliá, María Teresa; Ron-Angevin, Ricardo (IOP Publishing, 2019-09-11)
Previous works have reported that complex emotional and visual stimuli can increase the amplitude of the P300 brain potential. Thus, the aim of the present work is to assess these kinds of images in a P300 brain-computer ... -
Evaluation of flashing stimuli shape and colour heterogeneity using a P300 brain-computer interface speller
Fernández-Rodríguez, Álvaro; Velasco-Álvarez, Francisco Javier; Medina-Juliá, María Teresa; Ron-Angevin, Ricardo (2019-07-17)
Objective: Previous works using a visual P300-based speller have reported an improvement modifying the shape or colour of the presented stimulus. However, the effects of both blended factors have not been yet studied. Thus, ... -
P300-Based Brain-Computer Interface Speller: usability evaluation of three speller sizes by severely motor-disabled patients
Medina-Juliá, María Teresa; Fernández-Rodríguez, Álvaro; Velasco-Álvarez, Francisco Javier; Ron-Angevin, Ricardo (Frontiers Media, 2020-10-29)
Brain-computer interface (BCI) spellers allow severe motor-disabled patients to communicate using their brain activity without muscular mobility. Different visual configurations of the widely studied P300-based BCI speller ... -
Performance analysis with different types of visual stimuli in a BCI-Based Speller under an RSVP paradigm
Ron-Angevin, Ricardo; Medina-Juliá, María Teresa; Fernández-Rodríguez, Álvaro; Velasco-Álvarez, Francisco Javier; André, Jean-Marc; Lespinet-Najib, Véronique; García, Liliana[et al.] (Frontiers Media, 2021-01-05)
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 ... -
Posible efecto de interacción entre el paradigma de presentación y el conjunto de estímulos en un teclado virtual controlado a través de una interfaz cerebro-ordenador basada en P300
Fernández-Rodríguez, Álvaro; Medina-Juliá, María Teresa; Velasco-Álvarez, Francisco Javier; Ron-Angevin, Ricardo (2019-07-25)
Muchos trabajos en spellers basados en señal P300 visual han presentado estímulos novedosos que mejoraron el rendimiento utilizando el paradigma fila-columna (RCP). Sin embargo, la presentación visual serial rápida (RSVP) ... -
Preliminary results using a P300 brain-computer interface speller: a possible interaction effect between presentation paradigm and set of stimuli
Fernández-Rodríguez, Álvaro; Medina-Juliá, María Teresa; Velasco-Álvarez, Francisco Javier; Ron-Angevin, Ricardo (2019-06-18)
Several proposals to improve the performance controlling a P300-based BCI speller have been studied using the standard row-column presentation (RCP) par-adigm. However, this paradigm could not be suitable for those patients ... -
Speech stream segregation to control an ERP-based auditory BCI
Velasco-Álvarez, Francisco Javier; Fernández-Rodríguez, Álvaro; Medina-Juliá, María Teresa; Ron-Angevin, Ricardo (IOP Publishing Ltd, 2021-03-03)
The use of natural sounds in auditory brain-computer interfaces (BCI) has been shown to improve classification results and usability. Some auditory BCIs are based on stream segregation, in which the subjects must attend ... -
UMA-BCI speller, A P300-Based spelling tool
Velasco-Álvarez, Francisco Javier; Sancha-Ros, Salvador; García-Garaluz, Esther; Fernández-Rodríguez, Álvaro; Medina-Juliá, María Teresa; Ron-Angevin, Ricardo[et al.] (Gernot R. Müller-Putz, Jonas C. Ditz, Selina C. Wriessnegger, 2019)
The brain-computer interface research group of the University of Malaga (UMA-BCI) has developed a speller application based on the wellknown P300 potential which can be easily installed, configured and used. The application ...