Neural responses to perturbations in visual and auditory metronomes during sensorimotor synchronization

Neuropsychologia
Daniel C Comstock, Ramesh Balasubramaniam

Abstract

Tapping in synchrony to an isochronous rhythm involves several key functions of the sensorimotor system including timing, prediction and error correction. While auditory sensorimotor synchronization (SMS) has been well studied, much less is known about mechanisms involved in visual SMS. By comparing error correction in auditory and visual SMS, it can be determined if the neural mechanisms for detection and correction of synchronization errors are generalized or domain specific. To study this problem, we measured EEG while subjects tapped in synchrony to separate visual and auditory metronomes that both contained small temporal perturbations to induce errors. The metronomes had inter-onset intervals of 600 ms and the perturbations where of 4 kinds: ± 66 ms to induce period corrections, and ± 16 ms to induce phase corrections. We hypothesize that given the less precise nature of visual SMS, error correction to perturbed visual flashing rhythms will be more gradual than with the equivalent auditory perturbations. Additionally, we expect this more gradual error correction will be reflected in the visual evoked potentials. Our findings indicate that the visual system is only capable of more gradual phase corrections to even the larg...Continue Reading

Citations

Jul 28, 2018·Experimental Brain Research·Alexandria Pabst, Ramesh Balasubramaniam
Aug 4, 2018·Frontiers in Computational Neuroscience·Daniel C ComstockRamesh Balasubramaniam
May 20, 2021·The European Journal of Neuroscience·Daniel C ComstockRamesh Balasubramaniam
Aug 27, 2021·Attention, Perception & Psychophysics·Timothy B Patrick, Richard B Anderson

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