A Structure-Function Substrate of Memory for Spatial Configurations in Medial and Lateral Temporal Cortices

Shahin Tavakol; Qiongling Li; Jessica Royer; Reinder Vos de Wael; Sara Larivière; Alex Lowe; Casey Paquola; Elizabeth Jefferies; Tom Hartley; Andrea Bernasconi; Neda Bernasconi; Jonathan Smallwood; Veronique Bohbot; Lorenzo Caciagli; Boris Bernhardt

doi:10.1093/cercor/bhab001

A Structure-Function Substrate of Memory for Spatial Configurations in Medial and Lateral Temporal Cortices

Shahin Tavakol, Qiongling Li, Jessica Royer, Reinder Vos de Wael, Sara Larivière, Alex Lowe, Casey Paquola, Elizabeth Jefferies, Tom Hartley, Andrea Bernasconi, Neda Bernasconi, Jonathan Smallwood, Veronique Bohbot, Lorenzo Caciagli, Boris Bernhardt

Psychology

Research output: Contribution to journal › Article › peer-review

Abstract

Prior research has shown a role of the medial temporal lobe, particularly the hippocampal-parahippocampal complex, in spatial cognition. Here, we developed a new paradigm, the conformational shift spatial task (CSST), which examines the ability to encode and retrieve spatial relations between unrelated items. This task is short, uses symbolic cues, incorporates two difficulty levels, and can be administered inside the scanner. A cohort of 48 healthy young adults underwent the CSST, together with a set of behavioral measures and multimodal magnetic resonance imaging (MRI). Inter-individual differences in CSST performance correlated with scores on an established spatial memory paradigm, but neither with episodic memory nor mnemonic discrimination, supporting specificity. Analyzing high-resolution structural MRI data, individuals with better spatial memory showed thicker medial and lateral temporal cortices. Functional relevance of these findings was supported by task-based functional MRI analysis in the same participants and ad hoc meta-analysis. Exploratory resting-state functional MRI analyses centered on clusters of morphological effects revealed additional modulation of intrinsic network integration, particularly between lateral and medial temporal structures. Our work presents a novel spatial memory paradigm and supports an integrated structure-function substrate in the human temporal lobe. Task paradigms are programmed in python and made open access.

Original language	English
Journal	Cerebral Cortex
Early online date	27 Feb 2021
DOIs	https://doi.org/10.1093/cercor/bhab001
Publication status	E-pub ahead of print - 27 Feb 2021

Bibliographical note

© The Author(s) 2021. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

Access to Document

10.1093/cercor/bhab001

Tavakol 2020 Author Accepted MS
© The Author(s) 2021. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
Accepted author manuscript, 291 KBLicence: Unspecified

Cite this

Tavakol, S., Li, Q., Royer, J., Vos de Wael, R., Larivière, S., Lowe, A., Paquola, C., Jefferies, E., Hartley, T., Bernasconi, A., Bernasconi, N., Smallwood, J., Bohbot, V., Caciagli, L., & Bernhardt, B. (2021). A Structure-Function Substrate of Memory for Spatial Configurations in Medial and Lateral Temporal Cortices. Cerebral Cortex. Advance online publication. https://doi.org/10.1093/cercor/bhab001

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