Eye movements of flatfish for the changes of gravity (II) |
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Authors: | Iwata Kaori Takabayashi Akira Miyachi Ei-ichi |
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Affiliation: | Graduate School of Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutukake, Toyoake, 470-1192 Japan. ikaori@fujita-hu.ac.jp |
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Abstract: | In this study, we analysed the eye movements of flatfish for body tilting and compared with that of goldfish. The fish was fixed on the tilting table controlled by computer. The eye movements for body tilting along the different body axis were video-recorded. The vertical and torsional eye rotations were analysed frame by frame. In normal flatfish, vertical eye movement of left eye to leftward tilting was larger than that to rightward tilting. For head up or head down tilting, clear vertical eye movements were observed. On the other hand, torsional eye movements showed similar characteristics as goldfish. These results suggested that sacculus and lagena were important for otolith-ocular eye movements in flatfish. |
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