Endogenous fluctuations in cortical state selectively enhance different modes of sensory processing in human temporal lobe.

ABSTRACT: The degree of synchronized fluctuations in neocortical network activity can vary widely during alertness. One influential idea that has emerged over the past few decades is that perceptual decisions are more accurate when the state of population activity is desynchronized. This suggests that optimal task performance may occur during a particular cortical state - the desynchronized state. Here we show that, contrary to this view, cortical state can both facilitate and suppress perceptual performance in a task-dependent manner. We performed electrical recordings from surface-implanted grid electrodes in the temporal lobe while human subjects completed two perceptual tasks. We found that when local population activity is in a synchronized state, network and perceptual performance are enhanced

SUBMITTER: Parajuli A 

PROVIDER: S-EPMC10495466 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature