Single-trial detection of visual evoked potentials by common spatial patterns and wavelet filtering for brain-computer interface

Annu Int Conf IEEE Eng Med Biol Soc. 2013:2013:2882-5. doi: 10.1109/EMBC.2013.6610142.

Abstract

Event-related potentials (ERPs) are widely used in brain-computer interface (BCI) systems as input signals conveying a subject's intention. A fast and reliable single-trial ERP detection method can be used to develop a BCI system with both high speed and high accuracy. However, most of single-trial ERP detection methods are developed for offline EEG analysis and thus have a high computational complexity and need manual operations. Therefore, they are not applicable to practical BCI systems, which require a low-complexity and automatic ERP detection method. This work presents a joint spatial-time-frequency filter that combines common spatial patterns (CSP) and wavelet filtering (WF) for improving the signal-to-noise (SNR) of visual evoked potentials (VEP), which can lead to a single-trial ERP-based BCI.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Brain / physiology
  • Brain-Computer Interfaces*
  • Electrodes
  • Electroencephalography / methods*
  • Equipment Design
  • Evoked Potentials / physiology*
  • Evoked Potentials, Visual / physiology*
  • Female
  • Humans
  • Male
  • Neurologic Examination
  • Reproducibility of Results
  • Signal Processing, Computer-Assisted*
  • Signal-To-Noise Ratio
  • Time Factors
  • Wavelet Analysis
  • Young Adult