Dysfunction of the episodic memory network in the Alzheimer's disease cascade.
The 3 matches · all tie a paragraph to a whole file, not to given lines: weak matches, whose lines are not tinted
- [1] § Results › Investigating third variables to disease-related brain activation ↔ Parallel_Mediation.R, the whole file · a weak match · score 0.87 · parallel mediation, white matter hyperintensities, Effective connectivity, hippocampal volume, Entorhinal volume, indirect
- [2] § Methods › White matter hyperintensities and effective connectivity ↔ Parallel_Mediation.R, the whole file · a weak match · score 0.51 · white matter hyperintensity, WMH, connectivity, volumes
- [3] § Methods › Statistical analyses ↔ SandwichEstimation.m, the whole file · a weak match · score 0.51 · quadratic, scans, intercept, interaction, Sandwich, sex
Paper
Loaded from Europe PMC by your browser, not stored by OSCR: doi.org · Europe PMC
The paper is loaded when this pane is shown.
The authors' code
R · 51 lines · 1.5 KB · no license · 2 matches
- ###################################################################
- ##################### Lavaan Model syntax for #####################
- ####### Dysfunction of the episodic memory network in the #######
- ################### Alzheimer's disease cascade ###################
- ###################################################################
- # packages
- library(lavaan)
- library(tidySEM)
- ##### Parallel Mediation models #####
- # Please find the pseudocode for the parallel mediation models generated
- # in Lattmann et al. below. All variables were corrected for age, sex, and
- # years of education before entering the model. Afterwards, the variables were z-transformed.
- # White Matter Hyperintensities were Log10 transformed.
- #
- # - René Lattmann (last updated 23.02.2026)
- model <- '
- # Direct effect
- Cognition ~ c_prime*Deactivation
- # Mediation paths
- Hippocampal_Volume ~ a1*Deactivation
- Entorhinal_Volume ~ a2*Deactivation
- WhiteMatterHyperintensities ~ a3*Deactivation
- Effective_Connectivity ~ a4*Deactivation
- Cognition ~ b1*Hippocampal_Volume + b2*Entorhinal_Volume + b3*WhiteMatterHyperintensities + b4*Effective_Connectivity
- # Indirect effects
- indirect_HC := a1 * b1
- indirect_EC := a2 * b2
- indirect_WMH := a3 * b3
- indirect_EffConn := a4 * b4
- total_indirect := indirect_HC + indirect_EC + indirect_WMH + indirect_EffConn
- # Direct effect
- direct := c_prime
- # Total effect
- total := c_prime + total_indirect
- # Covariances
- Entorhinal_Volume ~~ Hippocampal_Volume
- '
Parallel_Mediation.R at commit 44d7ef2, no license · at the source
Overview
and 24 other authors
Klaus Scheffler11, Stefan Hetzer12, Alfredo Ramirez6,8,13,14,15, Christoph Laske16,17, Sebastian Sodenkamp16,18, Slawek Altenstein19,20, Luisa-Sophie Schneider21, Daria Gref21, Eike Jakob Spruth19,20, Andrea Lohse20, Björn H. Schott22,23,24, Jens Wiltfang22,23,25, Ingo Kilimann26,27, Doreen Goerss26,27, Ayda Rostamzadeh28, Josef Priller19,29,30, Oliver Peters19,20, Julian Hellmann-Regen19,31,32, Stefan Teipel26,27, Michael Wagner6,8, Frank Jessen6,13,28, Anne Maass1,33, Gabriel Ziegler1,2, Emrah Düzel1,2,3434 affiliations
- German Center for Neurodegenerative Diseases (DZNE),Magdeburg, Germany
- Institute of Cognitive Neurology and Dementia Research, Otto von Guericke University Magdeburg,Magdeburg, Germany
- Department of Neuroimaging Sciences, Institute for Neuroscience and Cardiovascular Research, Row Fogo Centre for Research into Ageing and the Brain, University of Edinburgh,Edinburgh, UK
- Department of Artificial Intelligence in Biomedical Engineering (AIBE), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU),Erlangen, Germany
- Department for Psychiatry and Psychotherapy, University Clinic Magdeburg, Magdeburg, Germany
- German Center for Neurodegenerative Diseases (DZNE),Bonn, Germany
- Institute for Medical Biometry, Informatics and Epidemiology, University Hospital Bonn, University of Bonn,Bonn, Germany
- Department for Old Age Psychiatry and Cognitive Disorders, University Hospital Bonn,Bonn, Germany
- Department of Neurology, University Hospital Bonn,Bonn, Germany
- MR-Research in Neurosciences, Department of Cognitive Neurology, University Medical Center Göttingen,Göttingen, Germany
- Department for Biomedical Magnetic Resonance, University of Tübingen,Tübingen, Germany
- Charité – Universitätsmedizin Berlin, Berlin Center for Advanced Neuroimaging,Berlin, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Disease (CECAD), University of Cologne,Cologne, Germany
- Department of Psychiatry and Psychotherapy, Division of Neurogenetics and Molecular Psychiatry, Faculty of Medicine and University Hospital Cologne, University of Cologne,Cologne, Germany
- Department of Psychiatry & Glenn Biggs Institute for Alzheimer’s and Neurodegenerative Diseases, San Antonio, TX USA
- German Center for Neurodegenerative Diseases (DZNE),Tübingen, Germany
- Section for Dementia Research, Hertie Institute for Clinical Brain Research and Department of Psychiatry and Psychotherapy, University of Tübingen,Tübingen, Germany
- Department of Psychiatry and Psychotherapy, University of Tübingen,Tübingen, Germany
- German Center for Neurodegenerative Diseases (DZNE),Berlin, Germany
- Department of Psychiatry and Psychotherapy, Charité – University Medical Center Berlin,Berlin, Germany
- Institute of Psychiatry and Psychotherapy, Charité – University Medical Center Berlin,Berlin, Germany
- German Center for Neurodegenerative Diseases (DZNE),Göttingen, Germany
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, University of Göttingen,Göttingen, Germany
- Leibniz Institute for Neurobiology,Magdeburg, Germany
- Department of Medical Sciences, Neurosciences and Signaling Group, Institute of Biomedicine (iBiMED), University of Aveiro,Aveiro, Portugal
- German Center for Neurodegenerative Diseases (DZNE),Rostock, Germany
- Department of Psychosomatic Medicine, Rostock University Medical Center,Rostock, Germany
- Department of Psychiatry, Medical Faculty, University of Cologne,Cologne, Germany
- Department of Psychiatry and Psychotherapy, School of Medicine, Technical University of Munich,Munich, Germany
- University of Edinburgh and UK DRI,Edinburgh, UK
- Department of Psychiatry and Neurosciences, Charité – University Medical Center Berlin,Berlin, Germany
- ECRC Experimental and Clinical Research Center, Charité – University Medical Center Berlin,Berlin, Germany
- Institute for Biology, Otto von Guericke University Magdeburg,Magdeburg, Germany
- Institute of Cognitive Neuroscience, University College London,London, UK
Abstract
Alzheimer’s disease (AD) is a major cause of dementia and cognitive decline. Here, we assessed how episodic memory (EM) network dysfunction, a hallmark of AD, is related to the longitudinal progression of AD biomarkers, neurodegeneration and cognition using data from the DZNE DELCODE study. This data set includes over 1000 longitudinal functional magnetic resonance imaging measurements of EM network function. We related activation and deactivation of EM to individual disease progression scores from a disease progression model. Voxel-wise analyses revealed widespread loss of deactivation and activation with disease progression. Trajectories for the loss of deactivation were nonlinear, associated with amyloid- and tau-positivity and visually preceded trajectories of cognitive decline. The relationship between deactivation and cognitive decline was partly independent of neurodegeneration. Our results provide evidence that synaptic dysfunction and neurodegeneration are independent drivers of cognitive decline, providing a rationale for targeting synaptic dysfunction along the AD cascade.
Reproduced under the paper's license (CC BY), from the paper cited above.
Repositories
Its files are read in the Code ↔ Paper reader above, with 3 matches between paragraphs and lines of code.
gitlab.inria.fr/epione/gp_progression_model_v2
829889f3a4162694ae0ba46d9421abfda1711006, 10 April 2021Availability: 1 check, the latest on 29 September 2026: the link answers
- 29 September 2026: the link answers
12 files
- conda/
recipe/ , Shell, 5 linesbuild.sh - examples/
real_data/ , Shell, 1 lineresults_benchmark/ CPU/ go_ADNI.sh - examples/
real_data/ , Shell, 1 lineresults_benchmark/ GPU/ go_ADNI_GPU.sh - examples/
real_data/ , Python, 101 linestest_ADNI.py - examples/
synthetic/ , Python, 122 linestest.py - notebooks/
GPPM_walkthrough.ipynb , Jupyter, 380 lines - setup.py, Python, 16 lines
- src/
GP_progression_model/ , Python, 130 linesDataGenerator.py - src/
GP_progression_model/ , Python, 1,088 linesGP_progression_model.py - src/
GP_progression_model/ , Python, 2 lines__init__.py - LICENSE, License, 42 lines
- README.md, Text, 138 lines
renelattmann/EMN_dysfunction
44d7ef2840c5464435a0f61d2e72fc57bb95fe44, 17 April 2026Availability: 1 check, the latest on 29 September 2026: the link answers
- 29 September 2026: the link answers
5 files
- Parallel_Mediation.R, R, 51 lines, 2 matches
- SandwichEstimation.m, MATLAB, 54 lines, 1 match
- rl_results2surf.m, MATLAB, 49 lines
- rl_surf_results_bidirect
ional.m , MATLAB, 37 lines - README.md, Text, 16 lines
Code availability
Code to the DPM utilized in this study and for the visualization of Figs. 1a and 1b can be found under https://
Reproduced under the paper's license (CC BY), from the paper cited above.
Tracing map
Proposed by the machine: these links were found in the paper and verified at the source, without human review. The map will receive a Zenodo DOI once one of the paper's authors has validated it with their ORCID.
What the map holds:
- 2 repositories of the authors' code, each at its verified commit, with its license and how the link was found in the paper;
- 14 scripts, each with its path and the digest of its content;
- 3 matches between paragraphs of the paper and lines of the code (method lexical-v1);
- neither the text of the paper nor the code itself.
Its JSON (tracing-map.json) is deposited on Zenodo with its DOI once the map is validated.
Data
No dataset and no data link were found in the paper.
Data availability
The raw data collected in the study “DELCODE—DZNE-Longitudin
Reproduced under the paper's license (CC BY), from the paper cited above.
Versions
The history of this record: each version stored by the harvester or made by a correction of its authors or of the maintainers of its code, and what changed in its facts. The texts of the paper (its abstract, its availability statements) are not part of it; versions that changed only those are not listed.
Version 1, 29 September 2026: the first record
Recorded: type, language, journal, volume, issue, pages, dates, 44 authors, 3 keywords, 13 MeSH terms, 1 funder, 85 references.
Cite
This paper
Lattmann, R., Vockert, N., Bernal, J., Wesenberg, J., Suksangkharn, Y., Yakupov, R., Schütze, H., Glanz, W., Incesoy, E., Butryn, M., Lüsebrink, F., Schmid, M., Stark, M., Kleineidam, L., Spottke, A., Coenjaerts, M., Brosseron, F., Fliessbach, K., Schneider, A., . . . Düzel, E. (2026). Dysfunction of the episodic memory network in the Alzheimer's disease cascade. Nature communications, 17(1), 3578. https://
BibTeX
@article{lattmann2026dys
author = {Lattmann, René and Vockert, Niklas and Bernal, Jose and Wesenberg, Judith and Suksangkharn, Yanin and Yakupov, Renat and Schütze, Hartmut and Glanz, Wenzel and Incesoy, Enise and Butryn, Michaela and Lüsebrink, Falk and Schmid, Matthias and Stark, Melina and Kleineidam, Luca and Spottke, Annika and Coenjaerts, Marie and Brosseron, Frederic and Fliessbach, Klaus and Schneider, Anja and Dechent, Peter and Scheffler, Klaus and Hetzer, Stefan and Ramirez, Alfredo and Laske, Christoph and Sodenkamp, Sebastian and Altenstein, Slawek and Schneider, Luisa-Sophie and Gref, Daria and Spruth, Eike Jakob and Lohse, Andrea and Schott, Björn H. and Wiltfang, Jens and Kilimann, Ingo and Goerss, Doreen and Rostamzadeh, Ayda and Priller, Josef and Peters, Oliver and Hellmann-Regen, Julian and Teipel, Stefan and Wagner, Michael and Jessen, Frank and Maass, Anne and Ziegler, Gabriel and Düzel, Emrah},
title = {{Dysfunction of the episodic memory network in the Alzheimer's disease cascade}},
journal = {Nature communications},
year = {2026},
month = apr,
volume = {17},
number = {1},
pages = {3578},
publisher = {Nature Publishing Group},
issn = {2041-1723},
doi = {10.1038/
url = {https://
pmid = {41997924},
pmcid = {PMC13090369}
}
RIS
TY - JOUR
AU - Lattmann, René
AU - Vockert, Niklas
AU - Bernal, Jose
AU - Wesenberg, Judith
AU - Suksangkharn, Yanin
AU - Yakupov, Renat
AU - Schütze, Hartmut
AU - Glanz, Wenzel
AU - Incesoy, Enise
AU - Butryn, Michaela
AU - Lüsebrink, Falk
AU - Schmid, Matthias
AU - Stark, Melina
AU - Kleineidam, Luca
AU - Spottke, Annika
AU - Coenjaerts, Marie
AU - Brosseron, Frederic
AU - Fliessbach, Klaus
AU - Schneider, Anja
AU - Dechent, Peter
AU - Scheffler, Klaus
AU - Hetzer, Stefan
AU - Ramirez, Alfredo
AU - Laske, Christoph
AU - Sodenkamp, Sebastian
AU - Altenstein, Slawek
AU - Schneider, Luisa-Sophie
AU - Gref, Daria
AU - Spruth, Eike Jakob
AU - Lohse, Andrea
AU - Schott, Björn H.
AU - Wiltfang, Jens
AU - Kilimann, Ingo
AU - Goerss, Doreen
AU - Rostamzadeh, Ayda
AU - Priller, Josef
AU - Peters, Oliver
AU - Hellmann-Regen, Julian
AU - Teipel, Stefan
AU - Wagner, Michael
AU - Jessen, Frank
AU - Maass, Anne
AU - Ziegler, Gabriel
AU - Düzel, Emrah
TI - Dysfunction of the episodic memory network in the Alzheimer's disease cascade
T2 - Nature communications
J2 - Nat Commun
PY - 2026
DA - 2026/
VL - 17
IS - 1
SP - 3578
SN - 2041-1723
PB - Nature Publishing Group
DO - 10.1038/
UR - https://
LA - en
ER -
CSL-JSON
{
"id": "10.1038/
"type": "article-journal",
"title": "Dysfunction of the episodic memory network in the Alzheimer's disease cascade",
"container-title": "Nature communications",
"author": [
{
"family": "Lattmann",
"given": "René"
},
{
"family": "Vockert",
"given": "Niklas"
},
{
"family": "Bernal",
"given": "Jose"
},
{
"family": "Wesenberg",
"given": "Judith"
},
{
"family": "Suksangkharn",
"given": "Yanin"
},
{
"family": "Yakupov",
"given": "Renat"
},
{
"family": "Schütze",
"given": "Hartmut"
},
{
"family": "Glanz",
"given": "Wenzel"
},
{
"family": "Incesoy",
"given": "Enise"
},
{
"family": "Butryn",
"given": "Michaela"
},
{
"family": "Lüsebrink",
"given": "Falk"
},
{
"family": "Schmid",
"given": "Matthias"
},
{
"family": "Stark",
"given": "Melina"
},
{
"family": "Kleineidam",
"given": "Luca"
},
{
"family": "Spottke",
"given": "Annika"
},
{
"family": "Coenjaerts",
"given": "Marie"
},
{
"family": "Brosseron",
"given": "Frederic"
},
{
"family": "Fliessbach",
"given": "Klaus"
},
{
"family": "Schneider",
"given": "Anja"
},
{
"family": "Dechent",
"given": "Peter"
},
{
"family": "Scheffler",
"given": "Klaus"
},
{
"family": "Hetzer",
"given": "Stefan"
},
{
"family": "Ramirez",
"given": "Alfredo"
},
{
"family": "Laske",
"given": "Christoph"
},
{
"family": "Sodenkamp",
"given": "Sebastian"
},
{
"family": "Altenstein",
"given": "Slawek"
},
{
"family": "Schneider",
"given": "Luisa-Sophie"
},
{
"family": "Gref",
"given": "Daria"
},
{
"family": "Spruth",
"given": "Eike Jakob"
},
{
"family": "Lohse",
"given": "Andrea"
},
{
"family": "Schott",
"given": "Björn H."
},
{
"family": "Wiltfang",
"given": "Jens"
},
{
"family": "Kilimann",
"given": "Ingo"
},
{
"family": "Goerss",
"given": "Doreen"
},
{
"family": "Rostamzadeh",
"given": "Ayda"
},
{
"family": "Priller",
"given": "Josef"
},
{
"family": "Peters",
"given": "Oliver"
},
{
"family": "Hellmann-Regen",
"given": "Julian"
},
{
"family": "Teipel",
"given": "Stefan"
},
{
"family": "Wagner",
"given": "Michael"
},
{
"family": "Jessen",
"given": "Frank"
},
{
"family": "Maass",
"given": "Anne"
},
{
"family": "Ziegler",
"given": "Gabriel"
},
{
"family": "Düzel",
"given": "Emrah"
}
],
"container-title-short":
"volume": "17",
"issue": "1",
"page": "3578",
"DOI": "10.1038/
"PMID": "41997924",
"PMCID": "PMC13090369",
"ISSN": "2041-1723",
"publisher": "Nature Publishing Group",
"URL": "https://
"language": "en",
"issued": {
"date-parts": [
[
2026,
4,
17
]
]
}
}
The tracing map gets a citation of its own once an author has validated it and it has a DOI.
Similar papers
The papers with a page that share the most with this one: the tools found in their code, their categories, datasets, cited references and authors, the rarest counting most.
- [1] doi:10.1038/s41467-026-74957-2 [code]
- Joint trajectories of brain atrophy, white matter hyperintensities and cognition quantify brain maintenance.Journal: Nature communicationsIn common: lavaan, Alzheimer's / dementia, cognitive, 4 references, 11 authors
- [2] doi:10.1038/s41467-026-71682-8 [code]
- GWAS meta-analysis of cerebrospinal fluid Alzheimer's biomarkers reveals loci regulating lipids, brain volume and autophagy.Journal: Nature communicationsIn common: scikit-learn, pandas, NumPy, Alzheimer's / dementia, 6 authors
- [3] doi:10.1186/s13195-026-02054-z [code]
- Pathways to resilience: relationships between cognitive reserve, psychological debt, and Alzheimer's disease biomarkers.Journal: Alzheimer's research & therapyIn common: Alzheimer's / dementia, 3 references, 4 authors
- [4] doi:10.1093/braincomms/fcag238 [code]
- Substantia Nigra MRI markers are lower in Alzheimer's disease and are linked to general cognitive function.Journal: Brain communicationsIn common: SPM, Statistics and Machine Learning Toolbox, pandas, Alzheimer's / dementia, cognitive, 5 references, 2 authors
- [5] doi:10.1002/ana.78227
- Alzheimer's Disease Co-Pathology and Cognitive Impairment in Amyotrophic Lateral Sclerosis.Journal: Annals of neurologyIn common: Alzheimer's / dementia, 2 references, 3 authors
- [6] doi:10.1002/acn3.70423
- Impact of Plasma p-tau181 on Cognition, Motor Phenotypes, and Disease Course in ALS.Journal: Annals of clinical and translational neurologyIn common: Alzheimer's / dementia, 1 reference, 3 authors
- [7] doi:10.1038/s43856-026-01707-2 [code]
- Decreased amyloid-related structure-function coupling in preclinical Alzheimer's disease.Journal: Communications medicineIn common: SPM, Statistics and Machine Learning Toolbox, seaborn, 3 other tools, Alzheimer's / dementia, 5 references
- [8] doi:10.1002/hbm.70542 [code]
- The In Vivo Microstructural Profile of Human Hippocampal Subfield CA1 and Its Relation to Memory Performance.Journal: Human brain mappingIn common: pandas, Matplotlib, NumPy, 2 authors
- [9] doi:10.1162/imag.a.1208 [code]
- Brain network analysis in Alzheimer's disease and mild cognitive impairment using high-density diffuse optical tomography.Journal: Imaging neuroscience (Cambridge, Mass.)In common: SPM, Statistics and Machine Learning Toolbox, seaborn, 4 other tools, Alzheimer's / dementia, 4 references
- [10] doi:10.1038/s41586-026-10631-3 [code]
- A prognostic human brain network for diffuse midline glioma.Journal: NatureIn common: CAT12, GIfTI library for MATLAB, SPM, 6 other tools, 1 reference
Contribute
The authors of this paper can claim it, correct its record and validate its tracing map, and the maintainers of its code (its owner, or a public member of its organization) correct what it says of their repository; anyone signed in can ask for its removal. Every request goes to OSCR's own machine, which answers it; your account page follows them.
Sign in with ORCID to claim this paper as one of its authors, correct its record or validate its tracing map: when the paper's metadata lists your ORCID iD, you are recognized at once. Maintainers of its code: sign in with GitHub, then claim the repository on your account page.
Claim this paper
Correct its record
Say what each link of this record is, remove the ones that are not the paper's, add the ones that are missing. The correction becomes a new version of the record, in its Versions section.
Validate its tracing map
You validate the map as this page shows it: 2 repositories of the authors' code, each at its verified commit and with its license, 14 scripts, and 3 matches between paragraphs and code (see the Code and Map sections). It then receives a DOI on Zenodo, with you (your ORCID iD) and OSCR as its creators; the code itself is not deposited.
The map's fingerprint: sha256:47f8bdbb5b660a5b…
Add the badge to its README
The badge links the code to this page. Copy one of these into the README of the paper's code: only you decide where it goes, and nothing is changed for you.
Markdown
[, paste the snippet at the top, then “Commit changes…” and, to review it first, “Create a new branch and start a pull request”. You open the pull request; OSCR asks for no permission.
Request its removal
To ask OSCR to remove this record, the copies of its authors' scripts or its tracing map, use the removal request page: signed in, you say who you are, what to remove and why, then review and confirm the request. Published rules decide every request (how).
Discussion, reproductions, activity
Discussion: questions and error reports about this paper and its code, from signed-in readers and its authors. It opens with sign-in.
Reproductions: reports from readers who ran the authors' code: what they reproduced, with which environment, commit and data. It opens with sign-in.
Activity: what happens around this paper: new versions of its record, its map's validation, discussions and reproductions. It opens with sign-in.
