A gradient from long-term memory to novel cognition: Transitions through default mode and executive cortex.

ABSTRACT: Human cognition flexibly guides decision-making in familiar and novel situations. Although these decisions are often treated as dichotomous, in reality, situations are neither completely familiar, nor entirely new. Contemporary accounts of brain organization suggest that neural function is organized along a connectivity gradient from unimodal regions of sensorimotor cortex, through executive regions to transmodal default mode network. We examined whether this graded view of neural organization helps to explain how decision-making changes across situations that vary in their alignment with long-term knowledge. We used a semantic judgment task, which parametrically varied the global semantic similarity of items within a feature matching task to create a 'task gradient', from conceptual combi

SUBMITTER: Wang X 

PROVIDER: S-EPMC7573535 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature