Empirical Inference Article 2005

Robust EEG Channel Selection Across Subjects for Brain Computer Interfaces

Most EEG-based Brain Computer Interface (BCI) paradigms come along with specific electrode positions, e.g.~for a visual based BCI electrode positions close to the primary visual cortex are used. For new BCI paradigms it is usually not known where task relevant activity can be measured from the scalp. For individual subjects Lal et.~al showed that recording positions can be found without the use of prior knowledge about the paradigm used. However it remains unclear to what extend their method of Recursive Channel Elimination (RCE) can be generalized across subjects. In this paper we transfer channel rankings from a group of subjects to a new subject. For motor imagery tasks the results are promising, although cross-subject channel selection does not quite achieve the performance of channel selection on data of single subjects. Although the RCE method was not provided with prior knowledge about the mental task, channels that are well known to be important (from a physiological point of view) were consistently selected whereas task-irrelevant channels were reliably disregarded.

Author(s): Schröder, M. and Lal, TN. and Hinterberger, T. and Bogdan, M. and Hill, J. and Birbaumer, N. and Rosenstiel, W. and Schölkopf, B.
Journal: EURASIP Journal on Applied Signal Processing
Volume: 2005
Number (issue): 19, Special Issue: Trends in Brain Computer Interfaces
Pages: 3103-3112
Year: 2005
Day: 0
Editors: Vesin, J. M., T. Ebrahimi
Bibtex Type: Article (article)
DOI: 10.1155/ASP.2005.3103
Digital: 0
Electronic Archiving: grant_archive
Language: en
Organization: Max-Planck-Gesellschaft
School: Biologische Kybernetik
Links:

BibTex

@article{2837,
  title = {Robust EEG Channel Selection Across Subjects for Brain Computer Interfaces},
  journal = {EURASIP Journal on Applied Signal Processing},
  abstract = {Most EEG-based Brain Computer Interface (BCI)
  paradigms come along with specific electrode positions, e.g.~for a
  visual based BCI electrode positions close to the primary visual
  cortex are used. For new BCI paradigms
  it is usually not known where task relevant activity can be
  measured from the scalp. For individual subjects Lal et.~al showed that recording positions can
  be found without the use of prior knowledge about the paradigm used. However it remains unclear to what extend their
  method of Recursive Channel Elimination (RCE)
  can be generalized across subjects.
  In this paper we transfer channel rankings from a group of subjects
  to a new subject.
  For motor imagery tasks the results are promising, although cross-subject channel
  selection does not quite achieve the performance of channel selection on data of single subjects.
  Although the RCE method was not provided with prior knowledge about the
  mental task, channels that are
  well known to be important (from a physiological point of view)
  were consistently selected whereas task-irrelevant channels
  were reliably disregarded.},
  volume = {2005},
  number = {19, Special Issue: Trends in Brain Computer Interfaces},
  pages = {3103-3112},
  editors = {Vesin, J. M., T. Ebrahimi},
  organization = {Max-Planck-Gesellschaft},
  school = {Biologische Kybernetik},
  year = {2005},
  slug = {2837},
  author = {Schr{\"o}der, M. and Lal, TN. and Hinterberger, T. and Bogdan, M. and Hill, J. and Birbaumer, N. and Rosenstiel, W. and Sch{\"o}lkopf, B.}
}