Cited by 718Neurobiology and Insect Physiology ResearchSpatial Cognition and NavigationMemory and Neural Mechanisms

Neural dynamics for landmark orientation and angular path integration

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Seelig, Johannes D., Jayaraman, Vivek·2015·Nature

Abstract

Many animals navigate using a combination of visual landmarks and path integration. In mammalian brains, head direction cells integrate these two streams of information by representing an animal's heading relative to landmarks, yet maintaining their directional tuning in darkness based on self-motion cues. Here we use two-photon calcium imaging in head-fixed Drosophila melanogaster walking on a ball in a virtual reality arena to demonstrate that landmark-based orientation and angular path integration are combined in the population responses of neurons whose dendrites tile the ellipsoid body, a toroidal structure in the centre of the fly brain. The neural population encodes the fly's azimuth relative to its environment, tracking visual landmarks when available and relying on self-motion cues in darkness. When both visual and self-motion cues are absent, a representation of the animal's orientation is maintained in this network through persistent activity, a potential substrate for short-term memory. Several features of the population dynamics of these neurons and their circular anatomical arrangement are suggestive of ring attractors, network structures that have been proposed to support the function of navigational brain circuits.

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  • Processing within the central complex enables an insect to establish and hold a heading relative to an external navigational reference.

    “Processing within the central complex enables an insect to establish and hold a heading relative to an external navigational reference [45,51].”

    From Phenomenal interface theory: a model for basal consciousness (2025) · cites this paper as [51]

    The Abstract and Discussion report that central-complex neurons in walking flies encode orientation relative to visual landmarks and maintain a compass-like representation when landmarks are absent. This supports establishing and retaining an internal heading reference, but the study does not show that this processing enables the insect to hold a behavioral heading; the Discussion describes that navigational role as a possibility. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • The head direction of the insect with respect to external cues is tracked by the activity of E-PG neurons in the ellipsoid body.

    “The head direction of the insect with respect to external cues is tracked by the activity of a set of EB neurons known as E-PGs [13,14], also colloquially referred to as ‘compass neurons’.”
  • No statistical methods were used to predetermine sample sizes, but the sample sizes are similar to those reported in previous publications.

    “No statistical methods were used to predetermine sample sizes but our sample sizes are similar to those reported in previous publications23,24,33,34,37,38.”

    From Multimodal cue integration and learning in a neural representation of head direction (2025) · cites this paper as [34]

    Experimental — accuracy not yet measured
  • P{R60D05-Gal4}attP2 drives Gal4 expression in EPG neurons.

    “P{R60D05-Gal4}attP2 drives Gal4 expression in EPG neurons, as reported previously34,41, and its construction was described previously61.”
  • The EB is known to be involved in navigation, supporting persistent activity correlated to heading direction.

    “Another well studied neuropil, the EB, is known to be involved in navigation, supporting persistent activity correlated to heading direction57–59.”

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Authors
Seelig, J. D., & Jayaraman, V.
Affiliations
Howard Hughes Medical Institute (US)
Corresponding author
Jayaraman, Vivek
Venue
Nature
Published
2015-05
Volume
521
Issue
7551
Pages
186-191
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1503270516
Cited by
718
References
47
Citations by year
2026: 60 · 2025: 77 · 2024: 73 · 2023: 63 · 2022: 69 · 2021: 71 · 2020: 61 · 2019: 70 · 2018: 59 · 2017: 66 · 2016: 37 · 2015: 12
FWCI
27.08
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
Howard Hughes Medical Institute
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
  • Physical Sciences › Engineering › Automotive Engineering › Spatial Cognition and Navigation
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
head direction cells, ellipsoid body, Drosophila melanogaster, spatial navigation, persistent activity, ring attractor, self-motion cues, insect brain, population coding
MeSH terms
Animals, Brain, Calcium, Cues, Darkness, Dendrites, Drosophila melanogaster, Female, Head, Neurons, Orientation, Photic Stimulation, Rotation, Space Perception, Walking, Spatial Navigation

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