Cited by 294Neurobiology and Insect Physiology ResearchVisual perception and processing mechanismsNeuroscience and Neuropharmacology Research

The Neural Substrate of Spectral Preference in Drosophila

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Gao, Shuying, Takemura, Shin-ya, Ting, Chun-Yuan, Huang, Songling, Lu, Zhiyuan, Luan, Haojiang, Rister, Jens, Thum, Andreas S. +7 more·2008·Neuron

Abstract

Drosophila vision is mediated by inputs from three types of photoreceptor neurons; R1-R6 mediate achromatic motion detection, while R7 and R8 constitute two chromatic channels. Neural circuits for processing chromatic information are not known. Here, we identified the first-order interneurons downstream of the chromatic channels. Serial EM revealed that small-field projection neurons Tm5 and Tm9 receive direct synaptic input from R7 and R8, respectively, and indirect input from R1-R6, qualifying them to function as color-opponent neurons. Wide-field Dm8 amacrine neurons receive input from 13-16 UV-sensing R7s and provide output to projection neurons. Using a combinatorial expression system to manipulate activity in different neuron subtypes, we determined that Dm8 neurons are necessary and sufficient for flies to exhibit phototaxis toward ultraviolet instead of green light. We propose that Dm8 sacrifices spatial resolution for sensitivity by relaying signals from multiple R7s to projection neurons, which then provide output to higher visual centers.

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Crossref · 10.1016/j.neuron.2008.08.010

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Authors
Gao, S., Takemura, S.-Y., Ting, C.-Y., Huang, S., Lu, Z., Luan, H., Rister, J., Thum, A. S., Yang, M., Hong, S.-T., Wang, J. W., Odenwald, W. F., White, B. H., Meinertzhagen, I. A., & Lee, C.-H.
Affiliations
  • National Institutes of Health (US)
  • Dalhousie University (CA)
  • University of Würzburg (DE)
  • Korea Advanced Institute of Science and Technology (KR)
  • University of California San Diego (US)
Corresponding author
  • Meinertzhagen, Ian A.
  • Lee, Chi-Hon
Venue
Neuron
Publisher
Elsevier BV
Published
2008-10
Volume
60
Issue
2
Pages
328-342
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2113540611
Cited by
284
References
54
Citations by year
2026: 9 · 2025: 17 · 2024: 17 · 2023: 14 · 2022: 10 · 2021: 16 · 2020: 22 · 2019: 24 · 2018: 16 · 2017: 14 · 2016: 13 · 2015: 18 · 2014: 21 · 2013: 13 · 2012: 17
FWCI
5.90
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • KOPS (University of Konstanz) (submittedVersion)
Funders
  • National Institutes of Health
  • National Eye Institute (EY-03592, R01EY003592)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (Z01HD008776, Z01HD008748, HD008748-03)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
neural circuits, serial electron microscopy
MeSH terms
Animals, Drosophila melanogaster, Interneurons, Synaptic Transmission, Optic Lobe, Nonmammalian, Photic Stimulation, Synapses, Ultraviolet Rays, Visual Pathways, Photoreceptor Cells, Invertebrate, Amacrine Cells, Compound Eye, Arthropod, Color Vision, Light Signal Transduction

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