Evidence map›Paper›PMID 34593640›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

Altered effective connectivity in sensorimotor cortices is a signature of severity and clinical course in depression.

Dipanjan Ray, Dmitry Bezmaternykh, Mikhail Mel'nikov, Karl J Friston, Moumita Das

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

29 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  11. The Functional Anatomy of Nociception: Effective Connectivity in Chronic Pain and Placebo Response.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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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

5 authors.

Dipanjan RayStatistical Learning Group, Basque Center on Cognition, Brain and Language, 20 009, Donostia, Spain; d.ray@bcbl.eu mdas@bcamath.org.ORCID 0000-0002-6235-3675
Dmitry BezmaternykhNovosibirsk National State Research University, Novosibirsk 630 090, Russia.ORCID 0000-0001-6712-5412
Mikhail Mel'nikovFederal Research Center of Fundamental and Translational Medicine, Research Institute of Molecular Biology and Biophysics, Novosibirsk 630 117, Russia.ORCID 0000-0003-4957-1958
Karl J FristonTheoretical Neurobiology, Wellcome Centre for Human Neuroimaging, London WC1N 3AR, United Kingdom.ORCID 0000-0001-7984-8909
Moumita DasApplied Statistics, Basque Center for Applied Mathematics, 48 009, Bilbao, Spain d.ray@bcbl.eu mdas@bcamath.org.ORCID 0000-0001-6548-2950

Funding

Wellcome Trust
6 · The paper itself

Abstract

Functional neuroimaging research on depression has traditionally targeted neural networks associated with the psychological aspects of depression. In this study, instead, we focus on alterations of sensorimotor function in depression. We used resting-state functional MRI data and dynamic causal modeling (DCM) to assess the hypothesis that depression is associated with aberrant effective connectivity within and between key regions in the sensorimotor hierarchy. Using hierarchical modeling of between-subject effects in DCM with parametric empirical Bayes we first established the architecture of effective connectivity in sensorimotor cortices. We found that in (interoceptive and exteroceptive) sensory cortices across participants, the backward connections are predominantly inhibitory, whereas the forward connections are mainly excitatory in nature. In motor cortices these parities were reversed. With increasing depression severity, these patterns are depreciated in exteroceptive and motor cortices and augmented in the interoceptive cortex, an observation that speaks to depressive symptomatology. We established the robustness of these results in a leave-one-out cross-validation analysis and by reproducing the main results in a follow-up dataset. Interestingly, with (nonpharmacological) treatment, depression-associated changes in backward and forward effective connectivity partially reverted to group mean levels. Overall, altered effective connectivity in sensorimotor cortices emerges as a promising and quantifiable candidate marker of depression severity and treatment response.

Indexed as

AdultBayes TheoremConnectomeDepressionFemaleHumansMagnetic Resonance ImagingMaleNerve NetNeural PathwaysSensorimotor Cortexdepressioneffective connectivityembodimentpredictive processesspectral DCM

Identifiers

PMID34593640
PMCPMC8501855

What OpenQuestion holds

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LicenceCC BY
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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.