Towards an enhanced ERP speller based on the visual processing of face familiarity. Seul-Ki Yeom; Fazli, S; Müller, K.-R; Seong-Whan Lee
Article: Towards an enhanced ERP speller based on the visual processing of face familiarity
Authors: Seul-Ki Yeom; Fazli, S; Müller, K.-R; Seong-Whan Lee. Dept. of Brain & Cognitive Eng., Korea Univ., Seoul, South Korea
Source: Engineering in Medicine and Biology Society (EMBC), 2014 36th Annual International Conference of the IEEE in Chicago.
Date: August 2014
Abstract. In this study, a novel P300 based brain-computer interface (BCI) system using random set presentation pattern and employing the effect of face familiarity has been proposed and developed. While the effect of face familiarity is widely studied in the cognitive neurosciences, it has so far not been addressed for the purpose of BCI. We compare P300-based BCI performances of a conventional row-column (RC)-based paradigm with our novel approach. Our experimental results indicate stronger deflections of the ERPs in response to face stimuli and thereby improving P300-based spelling performance. This leads to a significant reduction of stimulus sequences required for correct character classification. These findings demonstrate a promising new approach for improving the speed and thus fluency of BCI-enhanced communication with the widely used P300-based BCI setup.