A generalized cortical activity pattern at internally generated mental context boundaries during unguided narrative recall.

ABSTRACT: Current theory and empirical studies suggest that humans segment continuous experiences into events based on the mismatch between predicted and actual sensory inputs; detection of these 'event boundaries' evokes transient neural responses. However, boundaries can also occur at transitions between internal mental states, without relevant external input changes. To what extent do such 'internal boundaries' share neural response properties with externally driven boundaries? We conducted an fMRI experiment where subjects watched a series of short movies and then verbally recalled the movies, unprompted, in the order of their choosing. During recall, transitions between movies thus constituted major boundaries between internal mental contexts, generated purely by subjects' unguided thoughts. Fo

SUBMITTER: Lee H 

PROVIDER: S-EPMC9177147 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature