Investigating harbor seal's (<i>Phoca vitulina</i>) visual cognition: Which features they predominately use to discriminate 2D objects, brightness and shape?
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- OGAWA Monica
- Hokkaido University
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- MOMOI Ayako
- Asamushi Aquarium
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- KUSHIHIKI Toshihiko
- Asamushi Aquarium
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- MITANI Yoko
- Kyoto University
Bibliographic Information
- Other Title
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- ゼニガタアザラシ(<i>Phoca vitulina</i>)の視覚的物体認知に関する研究:形状と明度のどちらを優位に使用して物体を弁別しているのか
- Investigating harbor seal's (Phoca vitulina) visual cognition : Which features they predominately use to discriminate 2D objects, brightness and shape?
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Abstract
Characteristics of visual functions differ between species as they have evolved independently to adapt to their habitat. Animals use shape and brightness to visually discriminate between objects. In this study, we used five harbor seals (Phoca vitulina) to determine how amphibious animals use these two features of visual function. The subjects were trained in a two-alternative forced-choice task to discriminate between a dark gray circle (correct object) and a light gray triangle. In the test phase, we prepared two novel objects in addition to the two objects used in the training. We randomly presented two of the four objects to the seals and compared the selection rate of each object. The results revealed that harbor seals discriminate between objects based on shape rather than brightness. The visual cognitive pattern of seals may be a result of adaptation to a light-scarce underwater environment. This is the first study to provide preliminary evidence of the visual cognitive features of seals.
Journal
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- Japan Cetology
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Japan Cetology 33 (0), 15-23, 2023-11-20
The Cetology Study Group of Japan
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Details 詳細情報について
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- CRID
- 1390861305854207488
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- NII Book ID
- AA12177410
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- ISSN
- 24341347
- 18813445
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- NDL BIB ID
- 033282924
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
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- Abstract License Flag
- Allowed