Lateralized response of chicks to magnetic cues
Lateralized response of chicks to magnetic cues
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DOI：
10.1016/j.bbr.2007.07.029
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发表时间：
2008-01-10
影响因子：
2.7
通讯作者：
Wiltschko, Wolfgang
中科院分区：
文献类型：
--
作者：
Rogers, Lesley J.;Munro, Ursula;Wiltschko, Wolfgang
先前的研究表明，利用地磁场的方向线索定向的能力在三种鸟类中是偏侧的：当鸟类被限制使用右眼时，定向是可能的，但当它们必须使用左眼时，定向就不可能了。这被解释为可能偏向右眼的磁性线索的感知机制的偏侧。最近发现的磁罗盘方向在国内小鸡，一个物种，其中侧化已得到很好的研究，提供了一个模型系统，在其中更充分地探讨这些侧化的过程。因此，我们测试小鸡单眼在相同的测试条件下，如以前使用的证明小鸡的使用磁罗盘。在北移90度的磁场中，小鸡用右眼根据磁场线索定向，而小鸡用左眼则没有。但仍然倾向于原来的方向。对反应所需时间的分析表明，小鸡使用左眼的时间较长，这表明线索之间可能存在冲突。小鸡使用左眼的不同行为可能不是右眼-左半球专门检测磁场方向的问题，而是半球专门关注特定类型的线索。(c)2007 Elsevier B. V.保留所有权利。
Previous research has shown that the ability to orient with the use of directional cues from the geomagnetic field is lateralized in three avian species: orientation is possible when the birds are restricted to use of their right eye, but not when they have to use their left eye. This has been interpreted as possible lateralization of the perception mechanisms for magnetic cues in favour of the right eye. Recent discovery of magnetic compass orientation in domestic chicks, a species in which lateralization has been well studied, has made available a model system in which to explore these lateralized processes more fully. Hence we tested chicks monocularly in the same test conditions as used previously to demonstrate the chick's use of a magnetic compass. In a magnetic field with North shifted by 90 degrees, chicks using their right eye oriented according to magnetic cues, whereas chicks using the left eye did not. but continued to prefer the original direction. Analysis of the times taken to respond indicated longer latencies in the chicks using their left eye, suggesting a possible conflict between cues. The different behaviour of the chicks using their left eye might not be a matter of a right eye-left hemisphere specialization for detecting magnetic directions, but of hemispheric specialization for attending to specific types of cues. (c) 2007 Elsevier B.V. All rights reserved.