Abstract：
:For people suffering from severe paralysis, communication can be difficult or nearly impossible. Technology systems called brain-computer interfaces (BCIs) are being developed to assist these people with communication by using their brain activity to control a computer without any muscle activity. To benefit the development of BCIs that employ neural activity related to speech, we investigated if neural activity patterns related to different articulator movements can be distinguished from each other. We recorded with electrocorticography (ECoG), the neural activity related to different articulator movements in 4 epilepsy patients and classified which articulator participants moved based on the sensorimotor cortex activity patterns. The same was done for different movement directions of a single articulator, the tongue. In both experiments highly accurate classification was obtained, on average 92% for different articulators and 85% for different tongue directions. Furthermore, the data show that only a small part of the sensorimotor cortex is needed for classification (ca. 1 cm2). We show that recordings from small parts of the sensorimotor cortex contain information about different articulator movements which might be used for BCI control. Our results are of interest for BCI systems that aim to decode neural activity related to (actual or attempted) movements from a contained cortical area.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Salari E,Freudenburg ZV,Branco MP,Aarnoutse EJ,Vansteensel MJ,Ramsey NFdoi
10.1038/s41598-019-50834-5subject
Has Abstractpub_date
2019-10-02 00:00:00pages
14165issue
1issn
2045-2322pii
10.1038/s41598-019-50834-5journal_volume
9pub_type
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