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- Title
Single-channel EEG measurement of engagement in virtual rehabilitation: a validation study.
- Authors
Rogers, Jeffrey M.; Jensen, Jenny; Valderrama, Joaquin T.; Johnstone, Stuart J.; Wilson, Peter H.
- Abstract
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.
- Subjects
PATIENT participation; ELECTROENCEPHALOGRAPHY; STROKE rehabilitation; ALPHA rhythm; REHABILITATION; ADULTS; THETA rhythm; ROLLER coasters
- Publication
Virtual Reality, 2021, Vol 25, Issue 2, p357
- ISSN
1359-4338
- Publication type
Article
- DOI
10.1007/s10055-020-00460-8