An offline multi-class auditory P300 brain-computer interface using principal and independent component analysis

This thesis investigated a multi-class auditory P300 BCI as a step towards FES applicability. A multi-class P300 paradigm approach provides degrees-of-freedom in operating an FES device over the traditional P300 paradigm. Accuracy in classification of target P300s contributes to the paradigm's applicability in a 'real' environment. The computational effectiveness of the paradigm can be enhanced through signal processing prior to classification. A combination of principal component analysis (PCA) and independent component analysis (ICA), together with a method of enhancing the P300 properties through temporal and spatial manipulation are investigated as a means of improving classification accuracy. The combination of these techniques and the use of a multi-class P300 paradigm presents a different approach as a step towards FES applicability in an auditory BCI.

Grantor dc:publisher.institution

Division of Biomedical Engineering

Year dc:date.issued

2011

Author dc:creator

• Bentley, Alexander Simon Jeremy

Advisor dc:contributor.advisor

• John, Lester

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/11427/10127

OAI identifier oai:identifier

oai:open.uct.ac.za:11427/10127