PASCAL - Pattern Analysis, Statistical Modelling and Computational Learning

A novel brain-computer interface based on the rapid serial visual presentation paradigm
Laura Acqualagna, Matthias Treder, Martijn Schreuder and Benjamin Blankertz
In: IEEE EMBC 2010, 31 Aug - 4 Sept 2010, Buenos Aires.

Abstract

Abstract—Most present-day visual brain computer interfaces (BCIs) suffer from the fact that they rely on eye movements, are slow-paced, or feature a small vocabulary. As a potential remedy, we explored a novel BCI paradigm consisting of a central rapid serial visual presentation (RSVP) of the stimuli. It has a large vocabulary and realizes a BCI system based on covert non-spatial selective visual attention. In an offline study, eight participants were presented sequences of rapid bursts of symbols. Two different speeds and two different color conditions were investigated. Robust early visual and P300 components were elicited time-locked to the presentation of the target. Offline classification revealed a mean accuracy of up to 90% for selecting the correct symbol out of 30 possibilities. The results suggest that RSVP-BCI is a promising new paradigm, also for patients with oculomotor impairments.

EPrint Type:Conference or Workshop Item (Oral)
Project Keyword:Project Keyword UNSPECIFIED
Subjects:Brain Computer Interfaces
ID Code:7795
Deposited By:Benjamin Blankertz
Deposited On:17 March 2011