Journal
NATURE COMMUNICATIONS
Volume 11, Issue 1, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-020-14649-7
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Funding
- ERC Brain3.0 [681978, ANR-11-BSV4-0011, ANR-14-ASTR0011-01]
- LABEX CORTEX funding from the Universite de Lyon, within the program Investissements d'Avenir [ANR-11-LABX-0042, ANR-11-IDEX-0007]
- ERC P-CYCLES [614244]
- ANR OSCIDEEP [ANR-19-NEUC-0004]
- ANR Investing for the Future -PIA3 program [ANR-19-PI3A-0004]
- European Research Council (ERC) [681978] Funding Source: European Research Council (ERC)
- Agence Nationale de la Recherche (ANR) [ANR-11-BSV4-0011] Funding Source: Agence Nationale de la Recherche (ANR)
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Recent studies suggest that attention samples space rhythmically through oscillatory interactions in the frontoparietal network. How these attentional fluctuations coincide with spatial exploration/displacement and exploitation/selection by a dynamic attentional spotlight under top-down control is unclear. Here, we show a direct contribution of prefrontal attention selection mechanisms to a continuous space exploration. Specifically, we provide a direct high spatio-temporal resolution prefrontal population decoding of the covert attentional spotlight. We show that it continuously explores space at a 7-12 Hz rhythm. Sensory encoding and behavioral reports are increased at a specific optimal phase w/ to this rhythm. We propose that this prefrontal neuronal rhythm reflects an alpha-clocked sampling of the visual environment in the absence of eye movements. These attentional explorations are highly flexible, how they spatially unfold depending both on within-trial and across-task contingencies. These results are discussed in the context of exploration-exploitation strategies and prefrontal top-down attentional control.
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