Publikation:

Gaze tracking of large-billed crows (Corvus macrorhynchos) in a motion capture system

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Datum

2024

Autor:innen

Itahara, Akihiro

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Deutsche Forschungsgemeinschaft (DFG): 422037984

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Open Access-Veröffentlichung
Open Access Hybrid
Core Facility der Universität Konstanz

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Titel in einer weiteren Sprache

Publikationstyp
Zeitschriftenartikel
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Published

Erschienen in

Journal of Experimental Biology. The Company of Biologists. 2024, 227(6), jeb246514. ISSN 0022-0949. eISSN 1477-9145. Available under: doi: 10.1242/jeb.246514

Zusammenfassung

Previous studies often inferred the focus of a bird's attention from its head movements because it provides important clues about their perception and cognition. However, it remains challenging to do so accurately, as the details of how they orient their visual field toward the visual targets remain largely unclear. We thus examined visual field configurations and the visual field use of large-billed crows (Corvus macrorhynchos Wagler 1827). We used an established ophthalmoscopic reflex technique to identify the visual field configuration, including the binocular width and optical axes, as well as the degree of eye movement. A newly established motion capture system was then used to track the head movements of freely moving crows to examine how they oriented their reconstructed visual fields toward attention-getting objects. When visual targets were moving, the crows frequently used their binocular visual fields, particularly around the projection of the beak-tip. When the visual targets stopped moving, crows frequently used non-binocular visual fields, particularly around the regions where their optical axes were found. On such occasions, the crows slightly preferred the right eye. Overall, the visual field use of crows is clearly predictable. Thus, while the untracked eye movements could introduce some level of uncertainty (typically within 15 deg), we demonstrated the feasibility of inferring a crow's attentional focus by 3D tracking of their heads. Our system represents a promising initial step towards establishing gaze tracking methods for studying corvid behavior and cognition.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

Attention, Corvids, Crow, Head movement, Motion capture system, Visual field

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undefined / . - undefined, undefined

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ISO 690ITAHARA, Akihiro, Fumihiro KANO, 2024. Gaze tracking of large-billed crows (Corvus macrorhynchos) in a motion capture system. In: Journal of Experimental Biology. The Company of Biologists. 2024, 227(6), jeb246514. ISSN 0022-0949. eISSN 1477-9145. Available under: doi: 10.1242/jeb.246514
BibTex
@article{Itahara2024-03-15track-69934,
  year={2024},
  doi={10.1242/jeb.246514},
  title={Gaze tracking of large-billed crows (Corvus macrorhynchos) in a motion capture system},
  number={6},
  volume={227},
  issn={0022-0949},
  journal={Journal of Experimental Biology},
  author={Itahara, Akihiro and Kano, Fumihiro},
  note={Article Number: jeb246514}
}
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Interner Vermerk

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Kontakt
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Kommentar zur Publikation

Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Ja
Link zu Forschungsdaten
Beschreibung der Forschungsdaten
All processed data, R codes for the statistics, the MATLAB codes for the data processing, and the sample data are available in OSF
Head calibration application
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