Evidence map›Paper›PMID 18537121›Full record

ArticleThe Journal of comparative neurology2008

Synaptic circuits of the Drosophila optic lobe: the input terminals to the medulla.

Shin-Ya Takemura, Zhiyuan Lu, Ian A Meinertzhagen

Open access · greenAbstract readComparative Study
In one paragraph

Article in The Journal of comparative neurology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 103 papers.

0numbers the graph read from it
0cells of the map it votes in
103citing papers in PubMed
5.6field-weighted citation impact, top 3% 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

103 citing papers in PubMed, 207 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. On analogies in vertebrate and insect visual systems.Nature reviews. Neuroscience · 2025
    Review
  5. Article
  6. Article
  7. Article
  8. Neuronal "parts list" and wiring diagram for a visual system.bioRxiv : the preprint server for biology · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. A Quantitative Model of Sporadic Axonal Degeneration in theThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Neural specification, targeting, and circuit formation during visual system assembly.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  19. Article
  20. Article

43 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

3 authors at 1 institution in 1 country.

Shin-Ya TakemuraDepartment of Psychology, Life Sciences Centre, Dalhousie University, Halifax, Canada.
Zhiyuan Lu
Ian A Meinertzhagen
Dalhousie University · CA

Funding

Visual system synapses and circuitsR01EY003592 · NEI · DALHOUSIE UNIVERSITY · PI MEINERTZHAGEN, IAN A · 1985 to 2013
$2.8M
NEI NIH HHS EY-03592NEI NIH HHS R01 EY003592
6 · The paper itself

Abstract

Understanding the visual pathways of the fly's compound eye has been blocked for decades at the second optic neuropil, the medulla, a two-part relay comprising 10 strata (M1-M10), and the largest neuropil in the fly's brain. Based on the modularity of its composition, and two previous reports, on Golgi-impregnated cell types (Fischbach and Dittrich, Cell Tissue Res.,1989; 258:441-475) and their synaptic circuits in the first neuropil, the lamina, we used serial-section electron microscopy to examine inputs to the distal strata M1-M6. We report the morphology of the reconstructed medulla terminals of five lamina cells, L1-L5, two photoreceptors, R7 and R8, and three neurons, medulla cell T1 and centrifugal cells C2 and C3. The morphology of these conforms closely to previous reports from Golgi impregnation. This fidelity provides assurance that our reconstructions are complete and accurate. Synapses of these terminals broadly localize to the terminal and provide contacts to unidentified targets, mostly medulla cells, as well as sites of connection between the terminals themselves. These reveal that R8 forms contacts upon R7 and thus between these two spectral inputs; that L3 provides input upon both pathways, adding an achromatic input; that the terminal of L5 reciprocally connects to that of L1, thus being synaptic in the medulla despite lacking synapses in the lamina; that the motion-sensing input cells L1 and L2 lack direct interconnection but both receive input from C2 and C3, resembling lamina connections of these cells; and that, as in the lamina, T1 provides no output chemical synapses.

Indexed as

AnimalsDrosophilaMedulla OblongataNerve NetOptic Lobe, NonmammalianSynapsesVisual Pathways

Identifiers

PMID18537121
PMCPMC2481516
OpenAlexW2047572290

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.