Word repetition priming-induced oscillations in auditory cortex: a magnetoencephalography study

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Magnetoencephalography was used in a passive repetition priming paradigm. Words in two frequency bins (high/low) were presented to the participants auditorily. Participants' brain responses to these stimuli were analyzed using synthetic aperture magnetometry. The main finding of this study is that single-word repetition of low-frequency word pairs significantly attenuated the post-second word event-related desynchronization in the θ–α (5–15 Hz) bands, at 200–600 ms of post-second word stimulus onset. Peak significance between repeated high and low frequency words was evident at approximately 365–465 ms of posttarget onset. This finding has implications for: (i) the role of θ–α event-related desynchronization in lexical representation and access, (ii) the study of repetition suppression in the spectral–temporal domain, and (iii) the connection of neuronal repetition suppression with behavioral effects of repetition priming.

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