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- W4366823009 abstract "Abstract The central complex is a brain region in the insect brain that houses a neural network specialized to encode directional information. Directional coding has traditionally been investigated with compass cues that revolve in full rotations and at constant angular velocities around the insect’s head. However, these stimulus conditions do not fully simulate an insect’s sensory perception of compass cues during navigation. In nature, an insect flight is characterized by abrupt changes in moving direction as well as constant changes in velocity. The influence of such varying cue dynamics on compass coding remains unclear. We performed long-term tetrode recordings from the brain of monarch butterflies to study how central complex neurons respond to different stimulus velocities and directions. As these butterflies derive directional information from the sun during migration, we measured the neural response to a virtual sun. The virtual sun was either presented as a spot that appeared at random angular positions or was rotated around the butterfly at different angular velocities and directions. By specifically manipulating the stimulus velocity and trajectory, we dissociated the influence of angular velocity and direction on compass coding. While the angular velocity substantially affected the tuning directedness, the stimulus trajectory influenced the shape of the angular tuning curve. Taken together, our results suggest that the central complex flexibly adjusts its directional coding to the current stimulus dynamics ensuring a precise compass even under highly demanding conditions such as during rapid flight maneuvers." @default.
- W4366823009 created "2023-04-25" @default.
- W4366823009 creator A5076076890 @default.
- W4366823009 creator A5082230642 @default.
- W4366823009 date "2023-04-24" @default.
- W4366823009 modified "2023-10-17" @default.
- W4366823009 title "The influence of stimulus history on directional coding in the monarch butterfly brain" @default.
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- W4366823009 doi "https://doi.org/10.1007/s00359-023-01633-x" @default.
- W4366823009 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37095358" @default.
- W4366823009 hasPublicationYear "2023" @default.
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