Shaping Information Processing: The Role of Oscillatory Dynamics in a Working Memory Task.

ABSTRACT: Neural oscillations are thought to reflect low-level operations that can be used for higher-level cognitive functions. Here, we investigated the role of brain rhythms in the 1-30 Hz range by recording MEG in human participants performing a visual delayed match-to-sample paradigm in which orientation or spatial frequency of sample and probe gratings had to be matched. A cue occurring before or after sample presentation indicated the to-be-matched feature. We demonstrate that alpha/beta power decrease tracks the presentation of the informative cue and indexes faster responses. Moreover, these faster responses coincided with an augmented phase alignment of slow oscillations, as well as phase-amplitude coupling between slow and fast oscillations. Importantly, stimulus decodability was boosted

SUBMITTER: ElShafei HA 

PROVIDER: S-EPMC9480873 | biostudies-literature | 2022 Sep-Oct

REPOSITORIES: biostudies-literature