Evidence map›Paper›PMID 27522073›Full record

ArticleCerebral cortex (New York, N.Y. : 1991)2016

Longitudinal Evidence for Dissociation of Anterior and Posterior MTL Resting-State Connectivity in Aging: Links to Perfusion and Memory.

Alireza Salami, Anders Wåhlin, Neda Kaboodvand, Anders Lundquist, Lars Nyberg

Abstract read
In one paragraph

Article in Cerebral cortex (New York, N.Y. : 1991), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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3 · Its place in the literature

Who cites it

42 citing papers in PubMed.

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  18. Medial Temporal Lobe Networks in Alzheimer's Disease: Structural and Molecular Vulnerabilities.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

5 authors.

Alireza SalamiUmeå Center for Functional Brain Imaging, S-90187, Umeå, Sweden.
Anders WåhlinUmeå Center for Functional Brain Imaging, S-90187, Umeå, Sweden.
Neda KaboodvandUmeå Center for Functional Brain Imaging, S-90187, Umeå, Sweden.
Anders LundquistUmeå Center for Functional Brain Imaging, S-90187, Umeå, Sweden.
Lars NybergUmeå Center for Functional Brain Imaging, S-90187, Umeå, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neuroimaging studies of spontaneous signal fluctuations as measured by resting-state functional magnetic resonance imaging have revealed age-related alterations in the functional architecture of brain networks. One such network is located in the medial temporal lobe (MTL), showing structural and functional variations along the anterior-posterior axis. Past cross-sectional studies of MTL functional connectivity (FC) have yielded discrepant findings, likely reflecting the fact that specific MTL subregions are differentially affected in aging. Here, using longitudinal resting-state data from 198 participants, we investigated 5-year changes in FC of the anterior and posterior MTL. We found an opposite pattern, such that the degree of FC within the anterior MTL declined after age 60, whereas elevated FC within the posterior MTL was observed along with attenuated posterior MTL-cortical connectivity. A significant negative change-change relation was observed between episodic-memory decline and elevated FC in the posterior MTL. Additional analyses revealed age-related cerebral blood flow (CBF) increases in posterior MTL at the follow-up session, along with a positive relation of elevated FC and CBF, suggesting that elevated FC is a metabolically demanding alteration. Collectively, our findings indicate that elevated FC in posterior MTL along with increased local perfusion is a sign of brain aging that underlie episodic-memory decline.

Indexed as

Memory, EpisodicAdultAgedAged, 80 and overAgingBrain MappingCerebrovascular CirculationFemaleFollow-Up StudiesHumansLongitudinal StudiesMagnetic Resonance ImagingMaleMemory DisordersMiddle AgedNeural Pathwaysepisodic memory, functional connectivity, longitudinal, anterior and posterior MTL, perfusion

Identifiers

PMID27522073
PMCPMC5028008

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.