Type

Journal Article

Authors

Gary McDarby
Edmund Lalor
Ciaran Finucane
Richard Reilly
Simon P Kelly

Subjects

Psychology

Topics
humans diagnosis computer assisted physiology communication aids for disabled decision making everyday life visual cortex feasibility studies electroencephalography real time computer systems space perception user computer interface evoked potentials visual attention brain computer interface algorithms steady state middle aged administrative staff authors peripheral nerves adult

Visual spatial attention control in an independent brain-computer interface (2005)

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.
Collections Ireland -> Trinity College Dublin -> Administrative Staff Authors (Scholarly Publications)
Ireland -> Trinity College Dublin -> Administrative Staff Authors

Full list of authors on original publication

Gary McDarby, Edmund Lalor, Ciaran Finucane, Richard Reilly, Simon P Kelly

Experts in our system

1
Edmund C Lalor
Trinity College Dublin
Total Publications: 52
 
2
Ciaran Finucane
Trinity College Dublin
Total Publications: 25
 
3
Richard Reilly
Trinity College Dublin
Total Publications: 183
 
4
Simon P Kelly
Trinity College Dublin
Total Publications: 42