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Effect of instructive visual stimuli on neurofeedback training for motor imagery-based braincomputer interface

Kondo, T., Saeki, M., Hayashi, Y., Nakayashiki, K. and Takata, Y. (2015) Effect of instructive visual stimuli on neurofeedback training for motor imagery-based braincomputer interface. Human Movement Science, 43. pp. 239-249. ISSN 0167-9457

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To link to this item DOI: 10.1016/j.humov.2014.08.014

Abstract/Summary

Event-related desynchronization (ERD) of the electroencephalogram (EEG) from the motor cortex is associated with execution, observation, and mental imagery of motor tasks. Generation of ERD by motor imagery (MI) has been widely used for brain-computer interfaces (BCIs) linked to neuroprosthetics and other motor assistance devices. Control of MI-based BCIs can be acquired by neurofeedback training to reliably induce MI-associated ERD. To develop more effective training conditions, we investigated the effect of static and dynamic visual representations of target movements (a picture of forearms or a video clip of hand grasping movements) during the BCI training. After 4 consecutive training days, the group that performed MI while viewing the video showed significant improvement in generating MI-associated ERD compared with the group that viewed the static image. This result suggests that passively observing the target movement during MI would improve the associated mental imagery and enhance MI-based BCIs skills.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Biological Sciences > Department of Bio-Engineering
ID Code:37401
Uncontrolled Keywords:Brain-computer interface; Motor imagery; Event-related desynchronization; Neurofeedback training
Publisher:Elsevier

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