Poster E88, Monday, March 26, 2:30-4:30 pm, Exhibit Hall C
Time-Frequency Effects of Syntactic Violation in Music, Language, and Rhythm
Juho Daniel Lee1, Harim Jung1, Christine Mathew1, Psyche Loui1; 1Wesleyan University
Rhythm is an essential component in both music and language. This study contributes to the characterization of music and language processing by investigating to what extent rhythmic changes are processed similarly from musical and linguistic syntactic violation, thereby. With stimuli adopted from Slevc et al. (2009), participants read sentences that were paired with tonal chord progressions, and answered a comprehension question after each sentence, while their EEG was recorded. At predetermined critical time windows within each trial, we manipulated linguistic, musical, and rhythmic expectancy separately: Linguistic syntax was violated using syntactic garden-path sentences, musical syntax was violated using out-of-key chords, and rhythmic expectancy was violated by presenting segments early or late. Time-frequency analysis of EEG showed higher beta activity around 800ms after the critical time window in the linguistically unexpected compared to the musically unexpected condition. Higher beta activity around 100ms was observed in the rhythmically late compared to rhythmically early condition. Inter-trial phase coherence was increased in the beta band during the expected (rather than actual) onset of the critical time window. Results show differences between frequency and phase for the processing of musical, linguistic, and rhythmic information. These findings may have implications for rehabilitation strategies in clinical populations with communication disorders.
Topic Area: PERCEPTION & ACTION: Audition