Evidence map›Paper›PMID 28796202›Full record

ArticleNature2017

The complete connectome of a learning and memory centre in an insect brain.

Katharina Eichler, Feng Li, Ashok Litwin-Kumar, Youngser Park, Ingrid Andrade, Casey M Schneider-Mizell, Timo Saumweber, Annina Huser, Claire Eschbach, Bertram Gerber and 7 more

Open access · greenAbstract read
In one paragraph

Article in Nature, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 250 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
250citing papers in PubMed, 1 pooled it
30.0field-weighted citation impact, top 1% 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

250 citing papers in PubMed, 1 synthesis or guideline pooled it, 568 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. The larvalScience advances · 2026
    Article
  4. Article
  5. Article
  6. Selective octopaminergic tuning of mushroom body circuits during memory formation.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  7. The larvalbioRxiv : the preprint server for biology · 2026
    Article
  8. Review
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  14. Finding a path: local search behavior of Drosophila larvae.The Journal of experimental biology · 2025
    Article
  15. Article
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  19. Article
  20. Article

190 more citing papers are in PubMed but not listed here.

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

17 authors at 8 institutions in 3 countries.

Katharina EichlerHoward Hughes Medical Institute Janelia Research Campus, 19700 Helix Drive, Ashburn, Virginia 20147, USA.
Feng LiHoward Hughes Medical Institute Janelia Research Campus, 19700 Helix Drive, Ashburn, Virginia 20147, USA.
Ashok Litwin-KumarMortimer B. Zuckerman Mind Brain Behavior Institute, Department of Neuroscience, Columbia University, 3227 Broadway, New York, New York 10027, USA.
Youngser ParkDepartment of Applied Mathematics and Statistics, Whiting School of Engineering, Johns Hopkins University, 100 Whitehead Hall, 3400 North Charles Street, Baltimore, Maryland 21218, USA.
Ingrid AndradeHoward Hughes Medical Institute Janelia Research Campus, 19700 Helix Drive, Ashburn, Virginia 20147, USA.
Casey M Schneider-MizellHoward Hughes Medical Institute Janelia Research Campus, 19700 Helix Drive, Ashburn, Virginia 20147, USA.
Timo SaumweberAbteilung Genetik von Lernen und Gedächtnis, Leibniz Institut für Neurobiologie, 39118 Magdeburg, Germany.
Annina HuserDepartment of Biology, University of Konstanz, Universitätsstrasse 10, 78464 Konstanz, Germany.
Claire EschbachHoward Hughes Medical Institute Janelia Research Campus, 19700 Helix Drive, Ashburn, Virginia 20147, USA.
Bertram GerberAbteilung Genetik von Lernen und Gedächtnis, Leibniz Institut für Neurobiologie, 39118 Magdeburg, Germany.
Richard D FetterHoward Hughes Medical Institute Janelia Research Campus, 19700 Helix Drive, Ashburn, Virginia 20147, USA.
James W TrumanHoward Hughes Medical Institute Janelia Research Campus, 19700 Helix Drive, Ashburn, Virginia 20147, USA.
Carey E PriebeDepartment of Applied Mathematics and Statistics, Whiting School of Engineering, Johns Hopkins University, 100 Whitehead Hall, 3400 North Charles Street, Baltimore, Maryland 21218, USA.
L F AbbottMortimer B. Zuckerman Mind Brain Behavior Institute, Department of Neuroscience, Columbia University, 3227 Broadway, New York, New York 10027, USA.
Andreas S ThumDepartment of Biology, University of Konstanz, Universitätsstrasse 10, 78464 Konstanz, Germany.
Marta ZlaticHoward Hughes Medical Institute Janelia Research Campus, 19700 Helix Drive, Ashburn, Virginia 20147, USA.
Albert CardonaHoward Hughes Medical Institute Janelia Research Campus, 19700 Helix Drive, Ashburn, Virginia 20147, USA.
Howard Hughes Medical Institute · USHelix (United States) · USColumbia University · USJohns Hopkins University · USLeibniz Institute for Neurobiology · DEUniversity of Konstanz · DEJanelia Research Campus · USUniversity of Cambridge · GB

Funding

ADVANCED GRADUATE TRAINING PROGRAM IN THEORETICAL NEUROSCIENCET32NS064929 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI Laurence F. Abbott, Roudabeh Behnia · 2009 to 2026
$2.9M
Interactions between piriform cortex and amygdala in a model of associative learning in the mammalian olfactory systemF32DC014387 · NIDCD · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI LITWIN-KUMAR, ASHOK · 2014 to 2017
$159k
NIDCD NIH HHS F32 DC014387NINDS NIH HHS T32 NS064929
6 · The paper itself

Abstract

Associating stimuli with positive or negative reinforcement is essential for survival, but a complete wiring diagram of a higher-order circuit supporting associative memory has not been previously available. Here we reconstruct one such circuit at synaptic resolution, the Drosophila larval mushroom body. We find that most Kenyon cells integrate random combinations of inputs but that a subset receives stereotyped inputs from single projection neurons. This organization maximizes performance of a model output neuron on a stimulus discrimination task. We also report a novel canonical circuit in each mushroom body compartment with previously unidentified connections: reciprocal Kenyon cell to modulatory neuron connections, modulatory neuron to output neuron connections, and a surprisingly high number of recurrent connections between Kenyon cells. Stereotyped connections found between output neurons could enhance the selection of learned behaviours. The complete circuit map of the mushroom body should guide future functional studies of this learning and memory centre.

Indexed as

ConnectomeAnimalsBrainDrosophila melanogasterFeedback, PhysiologicalFemaleLarvaMemoryMushroom BodiesNeural PathwaysSynapses

Identifiers

PMID28796202
PMCPMC5806122
OpenAlexW2619970632

What OpenQuestion holds

Textmetadata
LicenceTDM
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.