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Sensorimotor learning with stereo auditory feedback for a brain-computer interface.

Motor imagery can be used to modulate sensorimotor rhythms (SMR) enabling detection of voltage fluctuations on the surface of the scalp using electroencephalographic electrodes. Feedback is essential in learning to modulate SMR for non-muscular communication using a brain-computer interface (BCI). A...

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Published in:Medical & Biological Engineering & Computing Vol. 51; no. 3; pp. 285 - 294
Main Authors: McCreadie, Karl A, Coyle, Damien H, Prasad, Girijesh
Format: research Journal Article
Published: Springer Nature Mar2013
Online Access:View this record in EBSCOhost
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      jtl: Medical & Biological Engineering & Computing
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      dt: Mar2013
      vid: 51
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      pub: Springer Nature
      place: New York, New York
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        10.1007/s11517-012-0992-7
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        atl: Sensorimotor learning with stereo auditory feedback for a brain-computer interface.
      aug:
        au:
          McCreadie, Karl A
          Coyle, Damien H
          Prasad, Girijesh
        affil: School of Computing and Intelligent Systems, University of Ulster, Magee, Derry/Londonderry, Northern Ireland, mccreadie-k1@email.ulster.ac.uk.
      sug:
        subj:
          Brain Physiology
          Brain-Computer Interfaces
          Evoked Potentials, Auditory Physiology
          Psychotherapy
          Adult
          Communication Aids for Persons with Disabilities
          Electroencephalography Methods
          Female
          Guided Imagery
          Human
          Male
          Young Adult
          Adult: 19-44 years
          Female
          Male
      ab: Motor imagery can be used to modulate sensorimotor rhythms (SMR) enabling detection of voltage fluctuations on the surface of the scalp using electroencephalographic electrodes. Feedback is essential in learning to modulate SMR for non-muscular communication using a brain-computer interface (BCI). A BCI not reliant upon the visual modality not only releases the visual channel for other uses but also offers an attractive means of communication for the physically impaired who are also blind or vision impaired. This study demonstrates the feasibility of replacing the traditional visual feedback modality with stereo auditory feedback. Results from a pilot study were used to select the most appropriate sounds for auditory feedback based on three options: broadband noise and two anechoic instrument samples. Subsequently, an SMR BCI was used to examine the effect on sensorimotor learning with broadband noise utilising a modified stereophonic presentation method. Twenty participants split into equal groups took part in ten sessions. The visual group performed best initially but did not improve over time whilst the auditory group improved as the study progressed. The results demonstrate the feasibility of using stereophonic auditory feedback with broadband noise as opposed to other auditory feedback presentation methods and sounds which are less intuitive.
      pubtype: Academic Journal
      doctype:
        research
        Journal Article
      ougenre: Article
    language: English
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