Cited by 42Visual perception and processing mechanismsNeurobiology and Insect Physiology ResearchNeural dynamics and brain function

Visual and motor signatures of locomotion dynamically shape a population code for feature detection in Drosophila

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Turner, Maxwell H, Krieger, Avery, Pang, Michelle M, Clandinin, Thomas R·2022·eLife

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Abstract

Natural vision is dynamic: as an animal moves, its visual input changes dramatically. How can the visual system reliably extract local features from an input dominated by self-generated signals? In Drosophila , diverse local visual features are represented by a group of projection neurons with distinct tuning properties. Here, we describe a connectome-based volumetric imaging strategy to measure visually evoked neural activity across this population. We show that local visual features are jointly represented across the population, and a shared gain factor improves trial-to-trial coding fidelity. A subset of these neurons, tuned to small objects, is modulated by two independent signals associated with self-movement, a motor-related signal, and a visual motion signal associated with rotation of the animal. These two inputs adjust the sensitivity of these feature detectors across the locomotor cycle, selectively reducing their gain during saccades and restoring it during intersaccadic intervals. This work reveals a strategy for reliable feature detection during locomotion.

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  • Exact matches between model and real LC responses were unlikely owing to differences in behavioural state during courtship and during imaging.

    “exact matches were unlikely owing to differences in behavioural state during courtship (on which the 1-to-1 network was trained) and during imaging11,31.”

    From Mapping model units to visual neurons reveals population code for social behaviour (2024) · cites this paper as [31]

    The Results section, “Walking behavior selectively suppresses responses of small-object detecting glomeruli” (page unavailable), shows that walking weakens visual responses in some LC-associated glomeruli. This supports the premise that behavioural state can affect LC responses, but the paper does not compare courtship with imaging or establish that such a difference makes exact model–response matches unlikely. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • Even simple stimuli can drive responses in multiple LC types.

    “As recordings from LC neurons reveal that even simple stimuli can drive responses in multiple LC types29–31”
  • Model LPLC2 was driven by large female sizes.

    “other model LC units, such as LPLC2, were driven by large female sizes, consistent with its known response to looming stimuli17,24,25,31.”
  • The model extends beyond findings from direct recordings of LC neurons, even in behaving flies.

    “We show that the model extends beyond findings from direct recordings of LC neurons29,30, even in behaving flies11,31.”

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Cited by

Sorted by citations

Authors
Turner, M. H., Krieger, A., Pang, M. M., & Clandinin, T. R.
Affiliations
Stanford University (US)
Corresponding author
  • Turner, Maxwell H
  • Clandinin, Thomas R
Venue
eLife
Published
2022-10-27
Volume
11
ISSN
2050-084X (ISSN-L)
OpenAlex
W4307362263
Cited by
42
References
13
Citations by year
2026: 7 · 2025: 12 · 2024: 12 · 2023: 9 · 2022: 2
FWCI
4.51
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institutes of Health (F32-MH118707, K99-EY032549, R01-EY022638, R01NS110060)
  • National Science Foundation (GRFP)
  • National Defense Science and Engineering Graduate (Fellowship)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
Drosophila, feature detection, population coding, locomotion, self-motion, saccades, projection neurons, visual motion, motor signals, gain modulation, volumetric imaging, connectome
MeSH terms
Animals, Drosophila, Interneurons, Locomotion, Motion Perception, Neurons, Vision, Ocular

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