Related Experiment Video
Updated: Jun 9, 2026
Motor Imagery Performance Through Embodied Digital Twins in a Virtual Reality-Enabled Brain-Computer Interface Environment
Published on: May 10, 2024
Movement imagery-related lateralization of event-related (de)synchronization (ERD/ERS): motor-imagery duration
Chang S Nam1, Yongwoong Jeon1, Young-Joo Kim1
1Department of Industrial Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
Objective:
To investigate movement imagery-related lateralization of event-related (de)synchronization (ERD/ERS) during two motor-imagery tasks with varying movement duration (brief versus continuous).
Methods:
Twelve subjects performed or kinesthetically imagined the indicated movement (left or right hand movement) for 1 s (brief) or 5 s (continuous) while electroencephalograms (EEGs) were recorded using 16 electrodes covering the sensorimotor cortex of the brain according to the modified 10-20 system.
Results:
Significant hemispheric differences were found between contralateral and ipsilateral area in mu ERD, mu ERS and beta ERD during both brief and continuous conditions, showing contralateral dominance of mu and beta ERD and ipsilateral dominance of mu ERS. Beta ERS showed a significant ipsilateral dominance only in the brief condition. Movement imagery duration influenced the lateralization of mu ERD, beta ERD, and beta ERS, but not mu ERS.
Conclusions:
The results of this study will aid in clarifying movement-related lateralization in association with imagery tasks under varying movement duration.
Significance:
For designing an EEG-based brain-computer interface (BCI) for people with severe neuromuscular impairments, movement imagery-related lateralization can play a key role in utilizing motor-imagery tasks as a control or communication strategy.
