Title
Control-display mapping in brain-computer interfaces
Author
Thurlings, M.E.
van Erp, J.B.F.
Brouwer, A.-M.
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. When using a tactile ERP-BCI for navigation, mapping is required between navigation directions on a visual display and unambiguously corresponding tactile stimuli (tactors) from a tactile control device: control-display mapping (CDM). We investigated the effect of congruent (both display and control horizontal or both vertical) and incongruent (vertical display, horizontal control) CDMs on task performance, the ERP and potential BCI performance. Ten participants attended to a target (determined via CDM), in a stream of sequentially vibrating tactors. We show that congruent CDM yields best task performance, enhanced the P300 and results in increased estimated BCI performance. This suggests a reduced availability of attentional resources when operating an ERP-BCI with incongruent CDM. Additionally, we found an enhanced N2 for incongruent CDM, which indicates a conflict between visual display and tactile control orientations.Practitioner Summary: Incongruency in control-display mapping reduces task performance. In this study, brain responses, task and system performance are related to (in)congruent mapping of command options and the corresponding stimuli in a brain-computer interface (BCI). Directional congruency reduces task errors, increases available attentional resources, improves BCI performance and thus facilitates human-computer interaction. © 2012 Copyright Taylor and Francis Group, LLC.
Subject
Human
PCS - Perceptual and Cognitive Systems
BSS - Behavioural and Societal Sciences
Vital ICT Infrastructure
User interfaces
Information Society
attention
BCI
CDM
conflict
congruency
ERP
interface
mapping
N2
navigation
P300
To reference this document use:
http://resolver.tudelft.nl/uuid:10e38a4b-92f9-416b-9562-09020b809b3e
DOI
https://doi.org/10.1080/00140139.2012.661085
TNO identifier
460460
ISSN
0014-0139
Source
Ergonomics, 55 (5), 564-580
Document type
article