Cited by 369Neurobiology and Insect Physiology ResearchNeuroscience and Neuropharmacology ResearchMemory and Neural Mechanisms

The DOI matches its Crossref record; 151 of the 152 references it cites were found in a registry or an index.

A connectome of a learning and memory center in the adult Drosophila brain

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Abstract

Understanding memory formation, storage and retrieval requires knowledge of the underlying neuronal circuits. In Drosophila, the mushroom body (MB) is the major site of associative learning. We reconstructed the morphologies and synaptic connections of all 983 neurons within the three functional units, or compartments, that compose the adult MB’s α lobe, using a dataset of isotropic 8 nm voxels collected by focused ion-beam milling scanning electron microscopy. We found that Kenyon cells (KCs), whose sparse activity encodes sensory information, each make multiple en passant synapses to MB output neurons (MBONs) in each compartment. Some MBONs have inputs from all KCs, while others differentially sample sensory modalities. Only 6% of KC>MBON synapses receive a direct synapse from a dopaminergic neuron (DAN). We identified two unanticipated classes of synapses, KC>DAN and DAN>MBON. DAN activation produces a slow depolarization of the MBON in these DAN>MBON synapses and can weaken memory recall.

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Research works printed but not linked: 5

  1. Eichler, 2017, The complete wiring diagram of the larval Drosophila mushroom body, Nature
  2. Qin, 2012, Gamma neurons mediate dopaminergic input during aversive olfactory memory formation in Drosophila, Current Biology, 22, 608, 10.1016/j.cub.2012.02.014 · DOI
  3. Rescorla, 1972, Classical Conditioning II, 64
  4. Schürmann, 1974, [On the functional anatomy of the corpora pedunculata in insects (author's transl)], Experimental Brain Research, 19, 406
  5. Yu, 2005, Drosophila DPM neurons form a delayed and branch-specific memory trace after olfactory classical conditioning, Cell, 123, 945, 10.1016/j.cell.2005.09.037 · DOI

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Metadata

Authors
Takemura, S.-Y., Aso, Y., Hige, T., Wong, A., Lu, Z., Xu, C. S., Rivlin, P. K., Hess, H., Zhao, T., Parag, T., Berg, S., Huang, G., Katz, W., Olbris, D. J., Plaza, S., Umayam, L., Aniceto, R., Chang, L.-A., Lauchie, S., Ogundeyi, O., Ordish, C., Shinomiya, A., Sigmund, C., Takemura, S., Tran, J., Turner, G. C., Rubin, G. M., & Scheffer, L. K.
Affiliations
Howard Hughes Medical Institute (US)
Corresponding author
  • Takemura, Shin-ya
  • Scheffer, Louis K
Venue
eLife
Published
2017-07-18
Volume
6
ISSN
2050-084X (ISSN-L)
OpenAlex
W2737808707
Cited by
367
References
152
Citations by year
2026: 16 · 2025: 18 · 2024: 44 · 2023: 32 · 2022: 35 · 2021: 47 · 2020: 59 · 2019: 54 · 2018: 53 · 2017: 8
FWCI
23.30
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Howard Hughes Medical Institute
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
mushroom body, Kenyon cells, dopaminergic neurons, synaptic connectivity, memory retrieval, associative learning, Drosophila, connectome, neuronal morphology, sensory modality specificity
MeSH terms
Animals, Drosophila, Learning, Memory, Mushroom Bodies, Connectome

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