Capturing with EEG the neural entrainment and coupling underlying sensorimotor synchronization to the beat
(2013) Cerebral Cortex — (2013)
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- Abstract
- Synchronizing movements with rhythmic inputs requires tight coup- ling of sensory and motor neural processes. Here, using a novel ap- proach based on the recording of steady-state-evoked potentials (SS-EPs), we examine how distant brain areas supporting these pro- cesses coordinate their dynamics. The electroencephalogram was recorded while subjects listened to a 2.4-Hz auditory beat and tapped their hand on every second beat. When subjects tapped to the beat, the EEG was characterized by a 2.4-Hz SS-EP compatible with beat-related entrainment and a 1.2-Hz SS-EP compatible with movement-related entrainment, based on the results of source analy- sis. Most importantly, when compared with passive listening of the beat, we found evidence suggesting an interaction between sensory- and motor-related activities when subjects tapped to the beat, in the form of 1) additional SS-EP appearing at 3.6 Hz, compatible with a nonlinear product of sensorimotor integration; 2) phase coupling of beat- and movement-related activities; and 3) selective enhancement of beat-related activities over the hemisphere contralateral to the tapping, suggesting a top-down effect of movement-related activities on auditory beat processing. Taken together, our results are compati- ble with the view that rhythmic sensorimotor synchronization is sup- ported by a dynamic coupling of sensory and motor related activities.
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Nozaradan, S., Zerouali, Y., Peretz, I., & Mouraux, A. (2013). Capturing with EEG the neural entrainment and coupling underlying sensorimotor synchronization to the beat. Cerebral Cortex. Published. https://doi.org/10.1093/cercor/bht261 (Original work published 2013)