PDF(Pubmed)
Abstract：
The magnetic compass sense of migratory songbirds is thought to derive from magnetically sensitive photochemical reactions in cryptochromes located in photoreceptor cells in the birds\' retinas. More specifically, transient radical pairs formed by light-activation of these proteins have been proposed to account for the birds\' ability to orient themselves using the Earth\'s magnetic field and for the observation that radiofrequency magnetic fields, superimposed on the Earth\'s magnetic field, can disrupt this ability. Here, by means of spin dynamics simulations, we show that it may be possible for the birds to orient in a monochromatic radiofrequency field in the absence of the Earth\'s magnetic field. If such a behavioural test were successful, it would provide powerful additional evidence for a radical pair mechanism of avian magnetoreception.
摘要：
迁徙鸣鸟的磁罗盘感被认为是来自位于鸟类视网膜感光细胞中的隐色素中的磁敏感光化学反应。更具体地说,由这些蛋白质的光活化形成的瞬态自由基对已被提出，以解释鸟类使用地球磁场定向自身的能力，并观察到射频磁场，叠加在地球磁场上，会破坏这种能力。这里,通过自旋动力学模拟，我们表明，在没有地球磁场的情况下，鸟类可能在单色射频场中定向。如果这样的行为测试成功了,它将为鸟类磁接收的激进配对机制提供有力的额外证据。
