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We tested the hypothesis that semantic and syntactic unification are segregated by means of neuronal synchronization of the functionally relevant networks in different frequency ranges: gamma (40 Hz and up) for semantic unification and lower beta (10\u201320 Hz) for syntactic unification. EEG power changes were quantified as participants read either correct sentences, syntactically correct though meaningless sentences (syntactic prose), or sentences that did not contain any syntactic structure (random word lists). Other sentences contained either a semantic anomaly or a syntactic violation at a critical word in the sentence. Larger EEG gamma-band power was observed for semantically coherent than for semantically anomalous sentences. Similarly, beta-band power was larger for syntactically correct sentences than for incorrect ones. These results confirm the existence of a functional dissociation in EEG oscillatory dynamics during sentence level language comprehension that is compatible with the notion of a frequency-based segregation of syntactic and semantic unification.<\/jats:p>","DOI":"10.1162\/jocn_a_00829","type":"journal-article","created":{"date-parts":[[2015,6,4]],"date-time":"2015-06-04T18:01:46Z","timestamp":1433440906000},"page":"2095-2107","update-policy":"https:\/\/doi.org\/10.1162\/mitpressjournals.corrections.policy","source":"Crossref","is-referenced-by-count":112,"title":["Frequency-based Segregation of Syntactic and Semantic Unification during Online Sentence Level Language Comprehension"],"prefix":"10.1162","volume":"27","author":[{"given":"Marcel","family":"Bastiaansen","sequence":"first","affiliation":[{"name":"1Radboud University"},{"name":"2NHTV Breda University of Applied Sciences"}]},{"given":"Peter","family":"Hagoort","sequence":"additional","affiliation":[{"name":"1Radboud 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