Evidence map›Paper›PMID 26107413›Full record

ArticlePloS one2015

How Lovebirds Maneuver Rapidly Using Super-Fast Head Saccades and Image Feature Stabilization.

Daniel Kress, Evelien van Bokhorst, David Lentink

Erratum issuedAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed.

  1. Article
  2. Article
  3. Optic flow based spatial vision in insects.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2023
    Review
  4. Gap selection and steering during obstacle avoidance in pigeons.The Journal of experimental biology · 2023
    Article
  5. Article
  6. Article
  7. Article
  8. Inflight head stabilization associated with wingbeat cycle and sonar emissions in the lingual echolocating Egyptian fruit bat, Rousettus aegyptiacus.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2021
    Article
  9. Turbulence explains the accelerations of an eagle in natural flight.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  10. Evolutionary versatility of the avian neck.Proceedings. Biological sciences · 2021
    Article
  11. Article
  12. How lovebirds maneuver through lateral gusts with minimal visual information.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  13. Review
  14. Review
  15. Article
  16. Pigeons (Frontiers in neuroscience · 2017
    Article
  17. Visual guidance of forward flight in hummingbirds reveals control based on image features instead of pattern velocity.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  18. Article
  19. Peripheral Processing Facilitates Optic Flow-Based Depth Perception.Frontiers in computational neuroscience · 2016
    Article
  20. The role of passive avian head stabilization in flapping flight.Journal of the Royal Society, Interface · 2015
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors.

Daniel KressDepartment of Mechanical Engineering, Stanford University, Stanford, California, United States of America.
Evelien van BokhorstDepartment of Mechanical Engineering, Stanford University, Stanford, California, United States of America; Department of Mechanical Engineering and Aeronautics, City University London, London, United Kingdom.
David LentinkDepartment of Mechanical Engineering, Stanford University, Stanford, California, United States of America; Experimental Zoology Group, Wageningen University, Wageningen, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Diurnal flying animals such as birds depend primarily on vision to coordinate their flight path during goal-directed flight tasks. To extract the spatial structure of the surrounding environment, birds are thought to use retinal image motion (optical flow) that is primarily induced by motion of their head. It is unclear what gaze behaviors birds perform to support visuomotor control during rapid maneuvering flight in which they continuously switch between flight modes. To analyze this, we measured the gaze behavior of rapidly turning lovebirds in a goal-directed task: take-off and fly away from a perch, turn on a dime, and fly back and land on the same perch. High-speed flight recordings revealed that rapidly turning lovebirds perform a remarkable stereotypical gaze behavior with peak saccadic head turns up to 2700 degrees per second, as fast as insects, enabled by fast neck muscles. In between saccades, gaze orientation is held constant. By comparing saccade and wingbeat phase, we find that these super-fast saccades are coordinated with the downstroke when the lateral visual field is occluded by the wings. Lovebirds thus maximize visual perception by overlying behaviors that impair vision, which helps coordinate maneuvers. Before the turn, lovebirds keep a high contrast edge in their visual midline. Similarly, before landing, the lovebirds stabilize the center of the perch in their visual midline. The perch on which the birds land swings, like a branch in the wind, and we find that retinal size of the perch is the most parsimonious visual cue to initiate landing. Our observations show that rapidly maneuvering birds use precisely timed stereotypic gaze behaviors consisting of rapid head turns and frontal feature stabilization, which facilitates optical flow based flight control. Similar gaze behaviors have been reported for visually navigating humans. This finding can inspire more effective vision-based autopilots for drones.

Indexed as

SaccadesAgapornisAnimalsBehavior, AnimalBiomechanical PhenomenaFemaleFlight, AnimalHeadHumansImage Processing, Computer-AssistedMaleNeck MusclesOrientationVision, OcularVisual Perception

Identifiers

PMID26107413
PMCPMC4481315

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.