ArticleThe Journal of experimental biology2022
Receptive field structures for two celestial compass cues at the input stage of the central complex in the locust brain.
Article in The Journal of experimental biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 10 citations in OpenAlex.
- Article
- Visual Aggregation Sensitivity of theInsects · 2026Article
- Neurons sensitive to sky compass signals in the brain of the Madeira cockroach Rhyparobia maderae.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2026Article
- A north-south hemispheric migratory divide in the butterfly Vanessa cardui.Nature communications · 2025Article
- Neuroarchitecture of the Central Complex in the Madeira Cockroach Rhyparobia maderae: Tangential Neurons.The Journal of comparative neurology · 2024Article
- Neurons sensitive to non-celestial polarized light in the brain of the desert locust.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2023Article
- The sky compass network in the brain of the desert locust.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2023Review
- The influence of stimulus history on directional coding in the monarch butterfly brain.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2023Article
- Varieties of visual navigation in insects.Animal cognition · 2023Review
- Weighting of Celestial and Terrestrial Cues in the Monarch Butterfly Central Complex.Frontiers in neural circuits · 2022Article
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4 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Successful navigation depends on an animal's ability to perceive its spatial orientation relative to visual surroundings. Heading direction in insects is represented in the central complex (CX), a navigation center in the brain, to generate steering commands. In insects that navigate relative to sky compass signals, CX neurons are tuned to celestial cues indicating the location of the sun. The desert locust CX contains a compass-like representation of two related celestial cues: the direction of unpolarized direct sunlight and the pattern of polarized light, which depends on the sun position. Whether congruent tuning to these two compass cues emerges within the CX network or is inherited from CX input neurons is unclear. To address this question, we intracellularly recorded from GABA-immunoreactive TL neurons, which are input elements to the locust CX (corresponding to R neurons in Drosophila), while applying visual stimuli simulating unpolarized sunlight and polarized light across the hemisphere above the animal. We show that TL neurons have large receptive fields for both types of stimuli. However, faithful integration of polarization angles across the dorsal hemisphere, or matched-filter ability to encode particular sun positions, was found in only two out of 22 recordings. Those two neurons also showed a good match in sun position coding through polarized and unpolarized light signaling, whereas 20 neurons showed substantial mismatch in signaling of the two compass cues. The data, therefore, suggest that considerable refinement of azimuth coding based on sky compass signals occurs at the synapses from TL neurons to postsynaptic CX compass neurons.
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