Title :
Augmenting a SSVEP BCI through single cycle analysis and phase weighting
Author :
Wilson, John J. ; Palaniappan, Ramaswamy
Author_Institution :
BCI Group, Univ. of Essex, Colchester, UK
fDate :
April 29 2009-May 2 2009
Abstract :
Single cycle analysis of the Steady State Visual Evoked Potential (SSVEP) response allows use of standard significance tests to determine a subject´s gaze. This allows standard criterion levels to be set across all subjects rather than individually by empirical analysis. Furthermore once a subject´s gaze has been classified it is possible to extract a notion of expected phase to a SSVEP stimulus. This expected phase value can then be used to augment classification of attention to a four class Brain Computer Interface system improving transfer rates.
Keywords :
brain-computer interfaces; electroencephalography; visual evoked potentials; BCI; EEG; brain-computer interface; phase value; phase weighting; single cycle analysis; standard criterion levels; steady state visual evoked potential; Computer science; Electroencephalography; Frequency; Liquid crystal displays; Monitoring; Neural engineering; Noise cancellation; Phase measurement; Spectral analysis; Steady-state; Brain Computer Interface (BCI); Electroencephalogram (EEG); Steady State Visual Evoked Potential (SSVEP);
Conference_Titel :
Neural Engineering, 2009. NER '09. 4th International IEEE/EMBS Conference on
Conference_Location :
Antalya
Print_ISBN :
978-1-4244-2072-8
Electronic_ISBN :
978-1-4244-2073-5
DOI :
10.1109/NER.2009.5109310
