title: Word repetition priming-induced oscillations in auditory cortex:  a magnetoencephalography study.
abstract: 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.
authors.affiliation: Department of Radiology, Lurie Family Foundations' MEG Imaging Center, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
authors.forename: Kambiz
authors.initials: K
authors.lastname: Tavabi
authors.forename: David
authors.initials: D
authors.lastname: Embick
authors.forename: Timothy P L
authors.initials: TP
authors.lastname: Roberts
mesh_terms: D000328:Adult; D001303:Auditory Cortex / Q000502:physiology*; D001683:Biological Clocks / Q000502:physiology*; D003344:Cortical Synchronization / Q000502:physiology*; D005071:Evoked Potentials / Q000502:physiology*; D005072:Evoked Potentials, Auditory / Q000502:physiology; D005260:Female; D006801:Humans; D015225:Magnetoencephalography / Q000379:methods; D008297:Male; D009433:Neural Inhibition / Q000502:physiology; D010897:Pitch Discrimination / Q000502:physiology*; D060865:Repetition Priming / Q000502:physiology*; D013067:Speech Perception / Q000502:physiology*; D055815:Young Adult