Periodic attention deficits after frontoparietal lesions provide causal evidence for rhythmic attentional sampling.

ABSTRACT: Contemporary models conceptualize spatial attention as a blinking spotlight that sequentially samples visual space. Hence, behavior fluctuates over time, even in states of presumed "sustained" attention. Recent evidence has suggested that rhythmic neural activity in the frontoparietal network constitutes the functional basis of rhythmic attentional sampling. However, causal evidence to support this notion remains absent. Using a lateralized spatial attention task, we addressed this issue in patients with focal lesions in the frontoparietal attention network. Our results revealed that frontoparietal lesions introduce periodic attention deficits, i.e., temporally specific behavioral deficits that are aligned with the underlying neural oscillations. Attention-guided perceptual sensitivity was

SUBMITTER: Raposo I 

PROVIDER: S-EPMC10842514 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature