Presentation Information
[P2-26]EEG Correlates of Movement-Induced Enhancements of Beat Timing
*April M Joyner1, Martin Wiener1 (1. George Mason University (United States of America))
Keywords:
Beat Perception,Sensorimotor Integration,Rhythm,Movement
Previous work has shown that motor systems and rhythmic auditory processing are linked, such that motor system activation is coincident with auditory system activity while listening to music, suggesting an interaction between auditory and motor systems. Further, behavioral work has shown that inducing movement in a subject can lead to enhancement of auditory timing abilities. Yet, the neural correlates of this enhancement are not well understood. Here, we replicate and extend work by Manning and Schutz (2013) in which subjects tap along or passively listen to isochronous woodblock sequences, and then must detect if a final, delayed probe tone is aligned with the implied beat and explore the brain activity associated with this effect of movement using EEG. Preliminary data suggest stronger neural entrainment to the beat in the movement condition in comparison to no-movement. Further activity locked to the probe tone also demonstrated a larger amplitude P300 and N600 for the movement condition. For response-locked activity during choice, the movement condition exhibited a larger preceding negativity peaking higher and closer to the response as well as a positive potential following the response that is higher in amplitude compared to the no movement condition, suggesting greater certainty. Data collection will proceed to investigate the strength of these results and potential correlations related to these findings. Overall, these findings suggest an improvement in timing perception and processing, stronger entrainment to the beat, and faster target detection associated with movement.