Evidence map›Paper›PMID 29761008›Full record

ArticleBrain and behavior2018

The importance of hippocampal dynamic connectivity in explaining memory function in multiple sclerosis.

Quinten van Geest, Hanneke E Hulst, Kim A Meijer, Lieke Hoyng, Jeroen J G Geurts, Linda Douw

Open access · goldAbstract read
In one paragraph

Article in Brain and behavior, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.7field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 42 citations in OpenAlex.

  1. Resting-state functional connectivity and cognitive impairment after COVID-19 infection: Evidence from a large-scale fMRI study.European psychiatry : the journal of the Association of European Psychiatrists · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 2 countries.

Quinten van GeestDepartment of Anatomy & Neurosciences VU University Medical Center Amsterdam Neuroscience VUmc MS Center Amsterdam Amsterdam The Netherlands.ORCID 0000-0003-3527-0994
Hanneke E HulstDepartment of Anatomy & Neurosciences VU University Medical Center Amsterdam Neuroscience VUmc MS Center Amsterdam Amsterdam The Netherlands.
Kim A MeijerDepartment of Anatomy & Neurosciences VU University Medical Center Amsterdam Neuroscience VUmc MS Center Amsterdam Amsterdam The Netherlands.
Lieke HoyngDepartment of Anatomy & Neurosciences VU University Medical Center Amsterdam Neuroscience VUmc MS Center Amsterdam Amsterdam The Netherlands.
Jeroen J G GeurtsDepartment of Anatomy & Neurosciences VU University Medical Center Amsterdam Neuroscience VUmc MS Center Amsterdam Amsterdam The Netherlands.
Linda DouwDepartment of Anatomy & Neurosciences VU University Medical Center Amsterdam Neuroscience VUmc MS Center Amsterdam Amsterdam The Netherlands.
Amsterdam Neuroscience · NLMassachusetts General Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Brain dynamics (i.e., variable strength of communication between areas), even at the scale of seconds, are thought to underlie complex human behavior, such as learning and memory. In multiple sclerosis (MS), memory problems occur often and have so far only been related to "stationary" brain measures (e.g., atrophy, lesions, activation and stationary (s) functional connectivity (FC) over an entire functional scanning session). However, dynamics in FC (dFC) between the hippocampus and the (neo)cortex may be another important neurobiological substrate of memory impairment in MS that has not yet been explored. Therefore, we investigated hippocampal dFC during a functional (f) magnetic resonance imaging (MRI) episodic memory task and its relationship with verbal and visuospatial memory performance outside the MR scanner. Methods: Thirty-eight MS patients and 29 healthy controls underwent neuropsychological tests to assess memory function. Imaging (1.5T) was obtained during performance of a memory task. We assessed hippocampal volume, functional activation, and sFC (i.e., FC of the hippocampus with the rest of the brain averaged over the entire scan, using an atlas-based approach). Dynamic FC of the hippocampus was calculated using a sliding window approach. Results: No group differences were found in hippocampal activation, sFC, and dFC. However, stepwise forward regression analyses in patients revealed that lower dFC of the left hippocampus (standardized β = -0.30; Conclusion: Low hippocampal dFC is an important indicator for maintained memory performance in MS, in addition to other hippocampal imaging measures. Hence, brain dynamics may offer new insights into the neurobiological mechanisms underlying memory (dys)function.

Indexed as

Memory, EpisodicAdolescentAdultAgedAtrophyBrain DiseasesBrain MappingFemaleHippocampusHumansMagnetic Resonance ImagingMaleMemory DisordersMiddle AgedMultiple SclerosisNeural Pathwayscognitiondynamic functional connectivityfunctional magnetic resonance imaginghippocampusmemorymultiple sclerosis

Identifiers

PMID29761008
PMCPMC5943730
OpenAlexW2795023655

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.