Abstract:
:While previous studies separately demonstrate EEG spectral modulations during speech preparation and ERP responses to the listened speech, it is unclear whether these responses are related on a trial-by-trial basis between a speaker and listener. In order to determine whether these responses are related in real-time, Electroencephalography (EEG) responses were measured simultaneously within a speaker and listener using a 24 electrode Mobile EEG system (18 participants; 9 pairs) during a sentence completion task. Each trial consisted of a sentence prompt with an incomplete ending (e.g. "I took my dog for a ____"). The speaker was instructed to fill in the ending with something expected (e.g. "walk") (40 trials) or unexpected (e.g. "drink") (40 trials). The other participant listened to the speaker throughout the block. We found that lower alpha band activity was reduced when individuals prepared unexpected sentence endings compared to expected sentence endings. Greater reductions in the speaker's lower alpha activity during response preparation were correlated with a more negative N400 response in the listener to the unexpected word. These findings demonstrate that alpha suppression and the N400 ERP effect are present within a hyperscanning context and they are correlated between the speaker and listener during sentence completion.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Bridwell DA,Henderson S,Sorge M,Plis S,Calhoun VDdoi
10.1038/s41598-018-31038-9subject
Has Abstractpub_date
2018-08-27 00:00:00pages
12838issue
1issn
2045-2322pii
10.1038/s41598-018-31038-9journal_volume
8pub_type
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