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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/17620

Title: Visual spatial attention control in an independent brain-computer interface
Author: REILLY, RICHARD
LALOR, EDMUND
Author's Homepage: http://people.tcd.ie/reillyri
http://people.tcd.ie/edlalor
Keywords: Administrative Staff Authors
Issue Date: 2005
Citation: Kelly, S.P. and Lalor, E.C. and Finucane, C. and McDarby, G. and Reilly, R.B., Visual spatial attention control in an independent brain-computer interface, IEEE Transactions on Biomedical Engineering, 52, 9, 2005, 1588, 1596
Series/Report no.: IEEE Transactions on Biomedical Engineering
52
9
Abstract: This paper presents a novel brain computer interface (BCI) design employing visual evoked potential (VEP) modulations in a paradigm involving no dependency on peripheral muscles or nerves. The system utilizes electrophysiological correlates of visual spatial attention mechanisms, the self-regulation of which is naturally developed through continuous application in everyday life. An interface involving real-time biofeedback is described, demonstrating reduced training time in comparison to existing BCIs based on self-regulation paradigms. Subjects were cued to covertly attend to a sequence of letters superimposed on a flicker stimulus in one visual field while ignoring a similar stimulus of a different flicker frequency in the opposite visual field. Classification of left/right spatial attention is achieved by extracting steady-state visual evoked potentials (SSVEPs) elicited by the stimuli. Six out of eleven physically and neurologically healthy subjects demonstrate reliable control in binary decision-making, achieving at least 75% correct selections in at least one of only five sessions, each of approximately 12-min duration. The highest-performing subject achieved over 90% correct selections in each of four sessions. This independent BCI may provide a new method of real-time interaction for those with little or no peripheral control, with the added advantage of requiring only brief training.
Description: PUBLISHED
URI: http://ieeexplore.ieee.org/iel5/10/32141/01495703.pdf?tp=&isnumber=32141&arnumber=1495703&punumber=10
http://hdl.handle.net/2262/17620
Related links: http://ieeexplore.ieee.org/iel5/10/32141/01495703.pdf?tp=&isnumber=32141&arnumber=1495703&punumber=10
Appears in Collections:Administrative Staff Authors (Scholarly Publications)

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