Title
Tactile, visual, and bimodal P300s: Could bimodal P300s boost BCI performance?
Author
Brouwer, A.M.
van Erp, J.B.F.
Aloise, F.
Cincotti, F.
TNO Defensie en Veiligheid
Publication year
2010
Abstract
The P300 is a positive peak in EEG occurring after presentation of a target stimulus. For brain-computer interfaces (BCIs), eliciting P300s by tactile stimuli would have specific advantages; the display can be hidden under clothes and keeps the user’s gaze free. In addition, robust classification is especially important for BCIs. This motivated us to investigate P300s in response to tactile and visual stimuli unimodally and bimodally. Tactile stimuli were delivered by tactors around the participant’s waist. Visual stimuli were flashed circles on a monitor, schematically representing the tactors. Participants attended to the vibrations and/or flashes of a “target” presented in a stream of standards. The P300 amplitude for the different modalities was comparable in size and depended on electrode location. Classification accuracy was highest in the bimodal condition. We conclude that bimodal stimuli could enhance classification results within a BCI context compared to unimodal presentations.
Subject
Human
PCS - Perceptual and Cognitive Systems
BSS - Behavioural and Societal Sciences
User interfaces
To reference this document use:
http://resolver.tudelft.nl/uuid:9265194a-3b67-4bd0-92a1-05b24419cdd8
DOI
https://doi.org/10.3814/2010/967027
TNO identifier
435181
Source
SRX Neuroscience
Article number
967027
Document type
article