Natural rhythms of periodic temporal attention

Arnaud Zalta, Spase Petkoski and Benjamin Morillon ()
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Arnaud Zalta: Aix Marseille University
Spase Petkoski: Aix Marseille University
Benjamin Morillon: Aix Marseille University

Nature Communications, 2020, vol. 11, issue 1, 1-12

Abstract: Abstract That attention is a fundamentally rhythmic process has recently received abundant empirical evidence. The essence of temporal attention, however, is to flexibly focus in time. Whether this function is constrained by an underlying rhythmic neural mechanism is unknown. In six interrelated experiments, we behaviourally quantify the sampling capacities of periodic temporal attention during auditory or visual perception. We reveal the presence of limited attentional capacities, with an optimal sampling rate of ~1.4 Hz in audition and ~0.7 Hz in vision. Investigating the motor contribution to temporal attention, we show that it scales with motor rhythmic precision, maximal at ~1.7 Hz. Critically, motor modulation is beneficial to auditory but detrimental to visual temporal attention. These results are captured by a computational model of coupled oscillators, that reveals the underlying structural constraints governing the temporal alignment between motor and attention fluctuations.

Date: 2020
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DOI: 10.1038/s41467-020-14888-8

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