Ramping dynamics and theta oscillations reflect dissociable signatures during rule-guided human behavior.

ABSTRACT: Contextual cues and prior evidence guide human goal-directed behavior. The neurophysiological mechanisms that implement contextual priors to guide subsequent actions in the human brain remain unclear. Using intracranial electroencephalography (iEEG), we demonstrate that increasing uncertainty introduces a shift from a purely oscillatory to a mixed processing regime with an additional ramping component. Oscillatory and ramping dynamics reflect dissociable signatures, which likely differentially contribute to the encoding and transfer of different cognitive variables in a cue-guided motor task. The results support the idea that prefrontal activity encodes rules and ensuing actions in distinct coding subspaces, while theta oscillations synchronize the prefrontal-motor network, possibly to gui

SUBMITTER: Weber J 

PROVIDER: S-EPMC10799948 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature