Print Email Facebook Twitter Does bimodal stimulus presentation increase ERP components usable in BCIs? Title Does bimodal stimulus presentation increase ERP components usable in BCIs? Author Thurlings, M.E. Brouwer, A.M. van Erp, J.B.F. Blankertz, B. Werkhoven, P.J. Publication year 2012 Abstract Event-related potential (ERP)-based brain–computer interfaces (BCIs) employ differences in brain responses to attended and ignored stimuli. Typically, visual stimuli are used. Tactile stimuli have recently been suggested as a gaze-independent alternative. Bimodal stimuli could evoke additional brain activity due to multisensory integration which may be of use in BCIs. We investigated the effect of visual–tactile stimulus presentation on the chain of ERP components, BCI performance (classification accuracies and bitrates) and participants' task performance (counting of targets). Ten participants were instructed to navigate a visual display by attending (spatially) to targets in sequences of either visual, tactile or visual–tactile stimuli. We observe that attending to visual–tactile (compared to either visual or tactile) stimuli results in an enhanced early ERP component (N1). This bimodal N1 may enhance BCI performance, as suggested by a nonsignificant positive trend in offline classification accuracies. A late ERP component (P300) is reduced when attending to visual–tactile compared to visual stimuli, which is consistent with the nonsignificant negative trend of participants' task performance. We discuss these findings in the light of affected spatial attention at high-level compared to low-level stimulus processing. Furthermore, we evaluate bimodal BCIs from a practical perspective and for future applications Subject HumanPCS - Perceptual and Cognitive SystemsBSS - Behavioural and Societal SciencesErgonomicsInformation SocietyBitratesBrain activityBrain responseClassification accuracyEvent-related potentialsFuture applicationsMultisensory integrationOffline classificationSpatial attentionStimulus processingTactile stimuliTask performanceVisual displayVisual stimulusBiomedical engineeringEngineering technologyNeurologyBrain computer interfaceadultarticlebrain computer interfaceelectroencephalogramevent related potentialfemalehumanhypothesismalemedical researchnormal humanpriority journalsensory analysistactile stimulationtask performancevisual stimulation To reference this document use: http://resolver.tudelft.nl/uuid:af0d4293-8a22-4cc8-81bb-b3b4e3359152 DOI https://doi.org/10.1088/1741-2560/9/4/045005 TNO identifier 462164 Source Journal of Neural Engineering, 9 (4) Article number 045005 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.