Cited by 153Neuroscience and Neuropharmacology ResearchNeurobiology and Insect Physiology ResearchNeural dynamics and brain function

Neural signal propagation atlas of Caenorhabditis elegans

Open access
Randi, Francesco, Sharma, Anuj K., Dvali, Sophie, Leifer, Andrew M.·2023·Nature

Abstract

. Here, to better understand the relationship between the structure and the function of a nervous system, we systematically measure signal propagation in 23,433 pairs of neurons across the head of the nematode Caenorhabditis elegans by direct optogenetic activation and simultaneous whole-brain calcium imaging. We measure the sign (excitatory or inhibitory), strength, temporal properties and causal direction of signal propagation between these neurons to create a functional atlas. We find that signal propagation differs from model predictions that are based on anatomy. Using mutants, we show that extrasynaptic signalling not visible from anatomy contributes to this difference. We identify many instances of dense-core-vesicle-dependent signalling, including on timescales of less than a second, that evoke acute calcium transients-often where no direct wired connection exists but where relevant neuropeptides and receptors are expressed. We propose that, in such cases, extrasynaptically released neuropeptides serve a similar function to that of classical neurotransmitters. Finally, our measured signal propagation atlas better predicts the neural dynamics of spontaneous activity than do models based on anatomy. We conclude that both synaptic and extrasynaptic signalling drive neural dynamics on short timescales, and that measurements of evoked signal propagation are crucial for interpreting neural function.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1038/s41586-023-06683-4

Cites

75 of 75 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Activity propagation measured by calcium imaging is not well predicted by anatomical connectivity alone in Caenorhabditis elegans, demonstrating the importance of extrasynaptic signalling not accounted for in the model.

    “This is consistent with recent studies showing that activity propagation measured by calcium imaging is not well predicted by anatomical connectivity alone in Caenorhabditis elegans, demonstrating the importance of extrasynaptic signalling not accounted for in our model50.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Randi, F., Sharma, A. K., Dvali, S., & Leifer, A. M.
Affiliations
  • Regeneron (United States) (US)
  • Princeton University (US)
Corresponding author
Leifer, Andrew M.
Venue
Nature
Published
2023-11-01
Volume
623
Issue
7986
Pages
406-414
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W4388126567
Cited by
153
References
75
Citations by year
2026: 32 · 2025: 62 · 2024: 52 · 2023: 6 · 2018: 1
FWCI
18.43
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • ArTS Archivio della ricerca di Trieste (University of Trieste https://www.units.it/) (submittedVersion)
Funders
  • National Institutes of Health (1dp2ns116768-01, P40OD010440)
  • National Institute of Neurological Disorders and Stroke (DP2-NS116768)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
neural signal propagation, Caenorhabditis elegans, optogenetic stimulation, whole-brain calcium imaging, dense core vesicles, neuropeptides, synaptic transmission, spontaneous neuronal activity, neural dynamics, structure-function relationship
MeSH terms
Animals, Calcium, Models, Neurological, Mutation, Neural Pathways, Neurons, Neuropeptides, Synapses, Signal Transduction, Caenorhabditis elegans

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review