Development of a Communication Support Device Controlled by Eye Movements and Voluntary Eye Blink
IEICE - Transactions on Information and Systems
FAC '09 Proceedings of the 5th International Conference on Foundations of Augmented Cognition. Neuroergonomics and Operational Neuroscience: Held as Part of HCI International 2009
Cross-subject classification of speaking modes using fNIRS
ICONIP'12 Proceedings of the 19th international conference on Neural Information Processing - Volume Part II
Using EEG and NIRS for brain-computer interface and cognitive performance measures: a pilot study
International Journal of Cognitive Performance Support
Silent speech decoder using adaptive collection
Proceedings of the companion publication of the 19th international conference on Intelligent User Interfaces
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A communication means is presented for patients with amyotrophic lateral sclerosis in totally locked-in state who are completely unable to move any part of the body and have no usual communication means. The method utilizes changes in cerebral blood volume accompanied with changes in brain activity. When a patient is asked a question and the answer to it is ‘yes’, the patient makes his or her brain active. The change in blood volume at the frontal lobe is detected with near-infrared light. The instantaneous amplitude and phase of the change are calculated, and the maximum amplitude and phase change are obtained. The answer ‘yes’ or ‘no’ of the patient is detected using a discriminant analysis with these two quantities as variables. The rate of correct detection is 80% on average.