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Title: Phase synchronization between EEG signals as a function of differences between stimuli characteristics
Author(s): Bosch, L.F.M. ten ; Mulder, K. ; Boves, L.W.J.
Publication year: 2019
In: Interspeech 2019, pp. 1213-1217
Publisher: Graz, Austria : International Speech Communication Association (ISCA)
Annotation: Interspeech 2019, 15 september 2019
Publication type: Article in monograph or in proceedings

Please use this identifier to cite or link to this item : https://hdl.handle.net/2066/214016   https://hdl.handle.net/2066/214016

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Subject: Language & Communication
Language & Speech Technology
Multimodal language and communication
Speech Comprehension
Organization: Theoretische Taalwetenschap
Toegepaste Taalwetenschap
Book title: Interspeech 2019
Page start: p. 1213
Page end: p. 1217
Abstract:
The neural processing of speech leads to specific patterns in the brain which can be measured as, e.g., EEG signals. When properly aligned with the speech input and averaged over many tokens, the Event Related Potential (ERP) signal is able to differentiate specific contrasts between speech signals. Well known effects relate to the difference between expected and unexpected words, in particular in the N400, while effects in N100 and P200 are related to attention and acoustic onset effects. Most EEG studies deal with the amplitude of EEG signals over time, sidestepping the effect of phase and phase synchronization. This paper investigates the relation between phase in the EEG signals measured in an auditory lexical decision task by Dutch participants listening to full and reduced English word forms. We show that phase synchronization takes place across stimulus conditions, and that the so-called circular variance is narrowly related to the type of contrast between stimuli.
Languages used: Dutch (dut)

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