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Single-channel EEG measurement of engagement in virtual rehabilitation: a validation study

Journal Article


Abstract


  • © 2020, Springer-Verlag London Ltd., part of Springer Nature. Stroke rehabilitation suffers from low levels of patient engagement, impeding recovery. Virtual rehabilitation (VR) approaches can improve patient outcomes; however, there is limited understanding of the participant’s user experience and the field lacks a validated, objective measure of VR engagement. A neurophysiological measure of engagement in healthy adults was therefore examined, to inform future clinical studies. Twenty-four participants (Mage 26.7 years, range 18–47) interacted with a tabletop VR system (Elements DNA, or EDNA), after which they rated their experience on the presence questionnaire (PQ). Separately, participants completed tasks eliciting low (resting eyes-open and -closed) and high (EDNA VR and roller coaster simulation) levels of engagement while continuous electroencephalogram (EEG) was recorded from a single, left pre-frontal electrode. EEG differences between the resting and simulation conditions included an increase in theta power (p < 0.01) and a decrease in alpha power (p < 0.01). Importantly, theta power in simulation conditions correlated with PQ scores expressing the hands-on EDNA VR experience (rs = 0.38–0.48). In conclusion, the current results provide proof of concept that increased frontal theta power in healthy adults provides a valid measure of user engagement in VR simulation and participation. As the practical potential of VR is increasingly realised in stroke rehabilitation, objective EEG-based measures of engagement may provide a convenient and sensitive technique to assist in evaluating these interventions.

Authors


  •   Rogers, Jeffrey (external author)
  •   Jensen, Jenny (external author)
  •   Valderrama, Joaquin (external author)
  •   Johnstone, Stuart J.
  •   Wilson, Peter (external author)

Publication Date


  • 2020

Citation


  • Rogers, J., Jensen, J., Valderrama, J., Johnstone, S. & Wilson, P. (2020). Single-channel EEG measurement of engagement in virtual rehabilitation: a validation study. Virtual Reality,

Scopus Eid


  • 2-s2.0-85088394226

Ro Metadata Url


  • http://ro.uow.edu.au/asshpapers/88

Place Of Publication


  • United Kingdom

Abstract


  • © 2020, Springer-Verlag London Ltd., part of Springer Nature. Stroke rehabilitation suffers from low levels of patient engagement, impeding recovery. Virtual rehabilitation (VR) approaches can improve patient outcomes; however, there is limited understanding of the participant’s user experience and the field lacks a validated, objective measure of VR engagement. A neurophysiological measure of engagement in healthy adults was therefore examined, to inform future clinical studies. Twenty-four participants (Mage 26.7 years, range 18–47) interacted with a tabletop VR system (Elements DNA, or EDNA), after which they rated their experience on the presence questionnaire (PQ). Separately, participants completed tasks eliciting low (resting eyes-open and -closed) and high (EDNA VR and roller coaster simulation) levels of engagement while continuous electroencephalogram (EEG) was recorded from a single, left pre-frontal electrode. EEG differences between the resting and simulation conditions included an increase in theta power (p < 0.01) and a decrease in alpha power (p < 0.01). Importantly, theta power in simulation conditions correlated with PQ scores expressing the hands-on EDNA VR experience (rs = 0.38–0.48). In conclusion, the current results provide proof of concept that increased frontal theta power in healthy adults provides a valid measure of user engagement in VR simulation and participation. As the practical potential of VR is increasingly realised in stroke rehabilitation, objective EEG-based measures of engagement may provide a convenient and sensitive technique to assist in evaluating these interventions.

Authors


  •   Rogers, Jeffrey (external author)
  •   Jensen, Jenny (external author)
  •   Valderrama, Joaquin (external author)
  •   Johnstone, Stuart J.
  •   Wilson, Peter (external author)

Publication Date


  • 2020

Citation


  • Rogers, J., Jensen, J., Valderrama, J., Johnstone, S. & Wilson, P. (2020). Single-channel EEG measurement of engagement in virtual rehabilitation: a validation study. Virtual Reality,

Scopus Eid


  • 2-s2.0-85088394226

Ro Metadata Url


  • http://ro.uow.edu.au/asshpapers/88

Place Of Publication


  • United Kingdom