The mediodorsal pulvinar coordinates the macaque fronto-parietal network during rhythmic spatial attention.

ABSTRACT: Spatial attention is discontinuous, sampling behaviorally relevant locations in theta-rhythmic cycles (3-6 Hz). Underlying this rhythmic sampling are intrinsic theta oscillations in frontal and parietal cortices that provide a clocking mechanism for two alternating attentional states that are associated with either engagement at the presently attended location (and enhanced perceptual sensitivity) or disengagement (and diminished perceptual sensitivity). It has remained unclear, however, how these theta-dependent states are coordinated across the large-scale network that directs spatial attention. The pulvinar is a candidate for such coordination, having been previously shown to regulate cortical activity. Here, we examined pulvino-cortical interactions during theta-rhythmic sampling by si

SUBMITTER: Fiebelkorn IC 

PROVIDER: S-EPMC6333835 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature