title: Three-dimensional computer graphic animations for studying social approach behaviour in medaka fish: Effects of systematic manipulation of morphological and motion cues.
abstract: We studied social approach behaviour in medaka fish using three-dimensional computer graphic (3DCG) animations based on the morphological features and motion characteristics obtained from real fish. This is the first study which used 3DCG animations and examined the relative effects of morphological and motion cues on social approach behaviour in medaka. Various visual stimuli, e.g., lack of motion, lack of colour, alternation in shape, lack of locomotion, lack of body motion, and normal virtual fish in which all four features (colour, shape, locomotion, and body motion) were reconstructed, were created and presented to fish using a computer display. Medaka fish presented with normal virtual fish spent a long time in proximity to the display, whereas time spent near the display was decreased in other groups when compared with normal virtual medaka group. The results suggested that the naturalness of visual cues contributes to the induction of social approach behaviour. Differential effects between body motion and locomotion were also detected. 3DCG animations can be a useful tool to study the mechanisms of visual processing and social behaviour in medaka.
authors.affiliation: Laboratory of Neurophysiology, National Institute for Basic Biology, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, Japan.|Department of Molecular & Cellular Physiology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Nakayasu
authors.affiliation: Laboratory of Neurophysiology, National Institute for Basic Biology, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Yasugi
authors.affiliation: Human Interface Laboratory, Department of Advanced Information Technology, Faculty of Information Science and Electrical Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan.|NEC Corporation, 5-7-1, Shiba, Minato-ku, Tokyo, Japan.
authors.forename: Soma
authors.initials: S
authors.lastname: Shiraishi
authors.affiliation: Human Interface Laboratory, Department of Advanced Information Technology, Faculty of Information Science and Electrical Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan.
authors.forename: Seiichi
authors.initials: S
authors.lastname: Uchida
authors.affiliation: Laboratory of Neurophysiology, National Institute for Basic Biology, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, Japan.|Department of Basic Biology, Faculty of Life Science, SOKENDAI (Graduate University for Advanced Studies), 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, Japan.
authors.forename: Eiji
authors.initials: E
authors.lastname: Watanabe
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D003196:Computer Graphics; D003463:Cues; D005260:Female; D006799:Housing, Animal; D020407:Internet; D009038:Motion; D009043:Motor Activity; D009990:Oryzias; D010775:Photic Stimulation; D011581:Psychological Tests; D012919:Social Behavior; D013997:Time Factors; D014584:User-Computer Interface; D014796:Visual Perception