The Sensory Neurobiology Group, Queensland Brain Institute and the School of Biomedical Sciences, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia.
J Exp Biol. 2010 Oct 1;213(Pt 19):3364-70. doi: 10.1242/jeb.042937.
The existence of polarization sensitivity (PS), most likely resulting from the orthogonal arrangement of microvilli in photoreceptors, has been proposed in cephalopods for some time, although it has rarely been examined behaviourally. Here, we tested the mourning cuttlefish, Sepia plangon, and the reaper cuttlefish, Sepia mestus, for polarization sensitivity using a large-field optomotor stimulus containing polarization contrast. Polaroid filter drums with stripes producing alternating e-vectors were rotated around free-moving animals. Polarized optomotor responses were displayed, and these responses were similar to those performed in response to a black-and-white, vertically-striped drum, whereas no responses were displayed to a plain polarizing control drum producing just a vertical e-vector. This indicates that the animals are able to see the contrast between adjacent stripes in the polarizing drum. To our knowledge, this is the first demonstration of functional polarization sensitivity in cuttlefish.
一段时间以来，人们一直认为头足类动物存在偏振敏感性（PS），很可能是由于光感受器中的微绒毛呈正交排列所致，尽管它很少在行为上得到检验。在这里，我们使用包含偏振对比度的大视场光动刺激来测试 mourning 乌贼（Sepia plangon）和 reaper 乌贼（Sepia mestus）的偏振敏感性。带有产生交替 e-向量条纹的宝丽来滤色鼓围绕自由移动的动物旋转。显示出偏振光运动反应，这些反应类似于对黑白垂直条纹鼓的反应，而对仅产生垂直 e-向量的普通偏振控制鼓则没有反应。这表明动物能够看到偏振鼓中相邻条纹之间的对比度。据我们所知，这是首次在乌贼中证明功能偏振敏感性。
