Flexible network community organization during the encoding and retrieval of spatiotemporal episodic memories
Publisher
MIT PRESSCitation
Schedlbauer, A. M., & Ekstrom, A. D. (2019). Flexible network community organization during the encoding and retrieval of spatiotemporal episodic memories. Network Neuroscience, 3(4), 1070-1093.Journal
NETWORK NEUROSCIENCERights
Copyright © 2019 Massachusetts Institute of Technology Published under a Creative Commons Attribution 4.0 International (CC BY 4.0) license. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. For a full description of the license, please visit https://creativecommons.org/licenses/by/4.0/legalcode.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Memory encoding and retrieval involve distinct interactions between multiple brain areas, yet the flexible structure of corresponding large-scale networks during such memory processing remains unclear. Using functional magnetic resonance imaging, we employed a spatiotemporal encoding and retrieval task, detecting functional community structure across the multiple components of our task. Consistent with past work, we identified a set of stable subnetworks, mostly belonging to primary motor and sensory cortices but also identified a subset of flexible hubs, mostly belonging to higher association areas. These “mover” hubs changed connectivity patterns across spatial and temporal memory encoding and retrieval, engaging in an integrative role within the network. Global encoding network and subnetwork dissimilarity predicted retrieval performance. Together, our findings emphasize the importance of flexible network allegiance among some hubs and the importance of network reconfiguration to human episodic memory.Note
Open access journalISSN
2472-1751PubMed ID
31637339Version
Final published versionSponsors
National Institutes of HealthUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USA [NS087527, NS076856]ae974a485f413a2113503eed53cd6c53
10.1162/netn_a_00102
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