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Related Experiment Video

Updated: Jun 24, 2026

Ablation of a Neuronal Population Using a Two-photon Laser and Its Assessment Using Calcium Imaging and Behavioral Recording in Zebrafish Larvae
10:29

Ablation of a Neuronal Population Using a Two-photon Laser and Its Assessment Using Calcium Imaging and Behavioral Recording in Zebrafish Larvae

Published on: June 2, 2018

A multi-ring shifter network computes head direction in zebrafish.

Siyuan Mei1, Hagar Lavian2, You Kure Wu2

  • 1Faculty of Biology, Ludwig-Maximilians-Universität München, 82152 Martinsried, Germany; Graduate School of Systemic Neurosciences, Ludwig-Maximilians-Universität München, 82152 Martinsried, Germany; Bernstein Center for Computational Neuroscience Munich, 82152 Martinsried, Germany.

Current Biology : CB
|June 22, 2026
PubMed
Summary

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This summary is machine-generated.

Many species use an internal compass for navigation. This study reveals that both fruit flies (Drosophila) and zebrafish share a conserved three-ring neural circuit mechanism for computing heading direction.

Area of Science:

  • Neuroscience
  • Comparative Biology
  • Animal Navigation

Background:

  • Animals utilize an internal compass, a neural circuit integrating sensory information to determine heading direction.
  • The universality of this neural compass mechanism across diverse species remains an open question.
  • Previous models suggested distinct compass architectures, such as separate rings in fruit flies versus a single ring in zebrafish.

Purpose of the Study:

  • To investigate the neural basis of the internal compass in zebrafish and compare it to fruit fly models.
  • To determine if a conserved three-ring neural circuit underlies heading direction computation in evolutionarily distant species.

Main Methods:

  • Anatomical analysis of zebrafish hindbrain neural structures.
  • Functional characterization of neural activity and tuning properties in zebrafish and fruit flies.
Keywords:
Drosophilacompass neuroncomputational modelcontinuous-attractor networkconvergent evolutionhead-direction cellring attractorshifter circuitsynapse modulationzebrafish

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Last Updated: Jun 24, 2026

Ablation of a Neuronal Population Using a Two-photon Laser and Its Assessment Using Calcium Imaging and Behavioral Recording in Zebrafish Larvae
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Published on: June 2, 2018

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  • Computational modeling to interpret neural data in the context of compass mechanisms.

    • Main Results:

    • Zebrafish possess three intermingled neural rings, including two 'hidden' shifter rings, challenging previous single-ring models.
    • The activity bumps in all three functional rings can overlap, making them distinguishable primarily through shifter neuron velocity tuning.
    • Head-direction cells in both species exhibit V-shaped velocity tuning, a pattern not predicted by classical compass models.

    Conclusions:

    • The zebrafish internal compass utilizes a three-ring mechanism, similar to fruit flies, suggesting convergent evolution.
    • This conserved three-ring circuit represents a fundamental neural architecture for heading direction computation across vertebrates and invertebrates.
    • The V-shaped velocity tuning of head-direction cells provides new insights into the operational principles of neural compasses.