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Neural representations of events arise from temporal community structure.


ABSTRACT: Our experience of the world seems to divide naturally into discrete, temporally extended events, yet the mechanisms underlying the learning and identification of events are poorly understood. Research on event perception has focused on transient elevations in predictive uncertainty or surprise as the primary signal driving event segmentation. We present human behavioral and functional magnetic resonance imaging (fMRI) evidence in favor of a different account, in which event representations coalesce around clusters or 'communities' of mutually predicting stimuli. Through parsing behavior, fMRI adaptation and multivoxel pattern analysis, we demonstrate the emergence of event representations in a domain containing such community structure, but in which transition probabilities (the basis of uncertainty and surprise) are uniform. We present a computational account of how the relevant representations might arise, proposing a direct connection between event learning and the learning of semantic categories.

SUBMITTER: Schapiro AC 

PROVIDER: S-EPMC3749823 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature

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Neural representations of events arise from temporal community structure.

Schapiro Anna C AC   Rogers Timothy T TT   Cordova Natalia I NI   Turk-Browne Nicholas B NB   Botvinick Matthew M MM  

Nature neuroscience 20130217 4


Our experience of the world seems to divide naturally into discrete, temporally extended events, yet the mechanisms underlying the learning and identification of events are poorly understood. Research on event perception has focused on transient elevations in predictive uncertainty or surprise as the primary signal driving event segmentation. We present human behavioral and functional magnetic resonance imaging (fMRI) evidence in favor of a different account, in which event representations coale  ...[more]

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