Brain Computer Interface (BCI) is an alternative communication system which allows users to send commands and/or messages toward the outside not crossing the normal output channels of the brain, but conveying these outputs from the human brain to a computer (Wolpaw et al., 2002). In an EEG-based BCI messages are obtained from brain activity. This study presents a novel P300 based Brain Computer Interface requiring no eye gaze, and so usable in covert attention status, called GeoSpell (Geometric Speller). GeoSpell performances have been compared with those obtained by the subjects with the standard 6 by 6 P300 Speller (P3Speller) matrix which depends on eye gaze (Farwell and Donchin, 1988). A NASA Task Load Index (TLX) workload assessment was employed to provide a subjective rating about the task's workload and satisfaction with respect to both the interfaces (NASA Human Performance Research Group 1987). Results shown comparable workload values for P3Speller and Geospell; this result has an important impact in term of efficiency and satisfaction for the use of the BCI devices. Geospell interface has shown an accuracy comparable with the P3 Speller one but with a lower bit-rate.

A new P300 no eye-gaze based interface: Geospell / F., Aloise; Aricò, Pietro; Schettini, Francesca; A., Riccio; M., Risetti; Salinari, Serenella; D., Mattia; Babiloni, Fabio; Cincotti, Febo. - STAMPA. - (2011), pp. 227-232. ((Intervento presentato al convegno International Conference on Bio-Inspired Systems and Signal Processing, BIOSIGNALS 2011 tenutosi a Rome, Italy nel 26 January 2011 through 29 January 2011 [10.5220/0003161202270232].

A new P300 no eye-gaze based interface: Geospell

Aricò, Pietro;SCHETTINI, FRANCESCA;SALINARI, Serenella;BABILONI, Fabio;CINCOTTI, FEBO
2011

Abstract

Brain Computer Interface (BCI) is an alternative communication system which allows users to send commands and/or messages toward the outside not crossing the normal output channels of the brain, but conveying these outputs from the human brain to a computer (Wolpaw et al., 2002). In an EEG-based BCI messages are obtained from brain activity. This study presents a novel P300 based Brain Computer Interface requiring no eye gaze, and so usable in covert attention status, called GeoSpell (Geometric Speller). GeoSpell performances have been compared with those obtained by the subjects with the standard 6 by 6 P300 Speller (P3Speller) matrix which depends on eye gaze (Farwell and Donchin, 1988). A NASA Task Load Index (TLX) workload assessment was employed to provide a subjective rating about the task's workload and satisfaction with respect to both the interfaces (NASA Human Performance Research Group 1987). Results shown comparable workload values for P3Speller and Geospell; this result has an important impact in term of efficiency and satisfaction for the use of the BCI devices. Geospell interface has shown an accuracy comparable with the P3 Speller one but with a lower bit-rate.
International Conference on Bio-Inspired Systems and Signal Processing, BIOSIGNALS 2011
p300; workload; brain computer interface; covert attention; eye tracker; electroencephalogram (eeg)
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
A new P300 no eye-gaze based interface: Geospell / F., Aloise; Aricò, Pietro; Schettini, Francesca; A., Riccio; M., Risetti; Salinari, Serenella; D., Mattia; Babiloni, Fabio; Cincotti, Febo. - STAMPA. - (2011), pp. 227-232. ((Intervento presentato al convegno International Conference on Bio-Inspired Systems and Signal Processing, BIOSIGNALS 2011 tenutosi a Rome, Italy nel 26 January 2011 through 29 January 2011 [10.5220/0003161202270232].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/472703
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