Communication of ALS patients with totally locked-in syndrome

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  • 完全閉じ込め症候群（TLS）となったALS患者のコミュニケーション
  • －Development of android-smartphone application by utilizing event-related potential－
  • －脳波（ERP）を用いたAndroidスマートフォンアプリの開発－

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Amyotrophic Lateral Sclerosis（ALS）patients are unable to successfully communicate their desires, although their mentality is normal, and so, the necessity of Communication Aids（CA）is realized. Therefore, the author focused on Event-Related Potential（ERP）which is elicited for the target by visual and auditory stimuli. P200, N200, P300, and N400 are components of ERP. These are brain potentials that are elicited when the subject focuses attention on stimuli that appears infrequently. It is possible for ALS patients to communicate their desires by utilizing ERP as their intention information. So,“Communication System by utilizing Android-Smartphone Application”was developed for Totally Locked-in Syndrome（TLS）patient. It consists of the smartphone, the electroencephalogram（EEG）module and three electrodes. The caregiver asks ALS patient some simple questions. And ALS patient answers“YES”or“NO”to the caregiver. This system can detect their answer. Key words：amyotrophic lateral sclerosis（als），totally locked-in syndrome（tls），communication aids（ca），event-related potential（erp）

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