Developmental changes in story-evoked responses in the neocortex and hippocampus

Abstract
Data availability
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Abstract

How does the representation of naturalistic life events change with age? Here we analyzed fMRI data from 414 children and adolescents (5 - 19 years) as they watched a narrative movie. In addition to changes in the degree of inter-subject correlation (ISC) with age in sensory and medial parietal regions, we used a novel measure (between-group ISC) to reveal age-related shifts in the responses across the majority of the neocortex. Over the course of development, brain responses became more discretized into stable and coherent events and shifted earlier in time to anticipate upcoming perceived event transitions, measured behaviorally in an age-matched sample. However, hippocampal responses to event boundaries actually decreased with age, suggesting a shifting division of labor between episodic encoding processes and schematic event representations between the ages of 5 and 19.

Data availability

All neuroimaging data is available at: http://fcon_1000.projects.nitrc.org/indi/cmi_healthy_brain_network/sharing_neuro.html, and all behavioral data is available at: https://github.com/samsydco/HBN

The following previously published data sets were used

1. Alexander LM
2. Escalera J
3. Ai L
4. Andreotti C
5. Febre K
6. Mangone A
7. Milham MP
(2017) Functional Connectomes Project International Neuroimaging Data-Sharing Initiative
doi:10.15387/CMI_HBN.

https://doi.org/10.15387/CMI_HBN

Article and author information

Author details

Samantha S Cohen

Department of Psychology, Columbia University, New York, United States

For correspondence
samantha.s.cohen@gmail.com

Competing interests
The authors declare that no competing interests exist.

"This ORCID iD identifies the author of this article:" 0000-0003-3007-5372
Nim Tottenham

Department of Psychology, Columbia University, New York, United States

Competing interests
The authors declare that no competing interests exist.
Christopher Baldassano

Department of Psychology, Columbia University, New York, United States

Competing interests
The authors declare that no competing interests exist.

"This ORCID iD identifies the author of this article:" 0000-0003-3540-5019

Funding

Andrew Africk

Samantha S Cohen

The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.

Ethics

Human subjects: Informed consent, and consent to publish, was obtained from all subjects 18 years and older. Consent was obtained from the parents or legal guardians for participants younger than 18 years. The neuroimaging portion of the study was approved by the Chesapeake Institutional Review Board (https://www.chesapeakeirb.com/). The behavioral experimental procedures were approved by the Columbia University IRB (protocol number AAAS0252, for adult data, and AAAT8550, for child data).

Copyright

This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.