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- W3100216508 abstract "Summary Recent studies suggest that attention samples space rhythmically through oscillatory interactions in the frontoparietal network. However, the precise mechanism through which the prefrontal cortex, at the source of attention control signals, organizes this rhythmic exploration of space remains unknown. We show that, when decoded at a high spatial (0.1°) and temporal resolution (50ms), the prefrontal covert attentional spotlight, aka the mind’s eye, continuously explores space at an alpha 7-12 Hz rhythm. When sensory events are presented at a specific optimal phase (resp. anti-phase) with respect to this rhythm, sensory encoding and behavioral report are accurate (resp. poor). We propose that this rhythmic prefrontal attentional spotlight dynamics corresponds to a continuous overt exploration of space via alpha-clocked attentional saccades. These attentional saccades are highly flexible, their pattern of space exploration depending both on within-trial and across-task contingencies. These results are discussed in the context of exploration and exploitation strategies and prefrontal top-down attentional control. Highlights The decoded prefrontal attentional spotlight samples visual space in rhythmic cycles This rhythmic attentional exploration predicts neuronal sensory processing accuracy This rhythmic attentional exploration predicts overt behavioral accuracy These rhythmic cycles define alpha-clocked attentional saccades Space exploration by attentional saccades is highly flexible and under top-down control" @default.
- W3100216508 created "2020-11-23" @default.
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- W3100216508 date "2019-05-16" @default.
- W3100216508 modified "2023-10-18" @default.
- W3100216508 title "Prefrontal attentional saccades explore space rhythmically" @default.
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- W3100216508 doi "https://doi.org/10.1101/637975" @default.
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