Learning to Modulate Sensorimotor Rhythms with Stereo Auditory Feedback for a Brain-Computer Interface

Karl McCreadie, DH Coyle, G Prasad

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)
8 Downloads (Pure)

Abstract

Motor imagery can be used to modulate sensorimotor rhythms (SMR) enabling detection of voltage fluctuations on the surface of the scalp using electroencephalographic (EEG) electrodes. Feedback is essential in learning how to intentionally modulate SMR in nonmuscularcommunication using a brain-computer interface (BCI). A BCI that is not reliant upon the visual modality for feedback is an attractive means of communication for the blind and the vision impaired and to release the visual channel for other purposes during BCI usage. The aim of this study is to demonstrate the feasibility of replacing the traditional visual feedback modality with stereo auditory feedback. Twenty participants split into equal groups took part in ten BCIsessions involving motor imagery. The visual feedback group performed best using two performance measures but did not show improvement over time whilst the auditory groupimproved as the study progressed. Multiple loudspeaker presentation of audio allows the listener to intuitively assign each of two classes to the corresponding lateral position in afree-field listening environment.
Original languageEnglish
Title of host publicationUnknown Host Publication
PublisherIEEE
Pages6711-6714
Number of pages4
Publication statusPublished - 2012
Event34th Annual International Conference of the IEEE EMBS - San Diego
Duration: 1 Jan 2012 → …

Conference

Conference34th Annual International Conference of the IEEE EMBS
Period1/01/12 → …

Keywords

  • brain computer interface
  • BCI
  • auditory
  • EEG
  • sensorimotor rhythm

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