Gobes Sharon M H, Jennings Rebecca B, Maeda Rie K
Neuroscience Program, Wellesley College, 106 Central Street, Wellesley, MA 02481-8203, United States.
Neuroscience Program, Wellesley College, 106 Central Street, Wellesley, MA 02481-8203, United States.
Behav Processes. 2019 Jun;163:5-12. doi: 10.1016/j.beproc.2017.07.007. Epub 2017 Jul 23.
Male zebra finches, Taeniopygia guttata, acquire their song during a sensitive period for auditory-vocal learning by imitating conspecific birds. Laboratory studies have shown that the sensitive period for song acquisition covers a developmental phase lasting from 25 to 65days post hatch (dph); formation of auditory memory primarily occurs between 25 and 35dph. The duration of the sensitive period is, however, dependent upon model availability. If a tutor is not available early in development, birds will learn from an adult male introduced to their cage even after they reach 65dph. Birds who are exposed to a second tutor as late as 63dph can successfully adjust their song 'template' to learn a new song model. However, if second-tutor song exposure occurs after 65dph, learning of a new tutor's song will not occur for most individuals. Here, we review the literature as well as novel studies from our own laboratory concerning sensitive periods for auditory memory formation in zebra finches; these behavioral studies indicate that there are developmental constraints on imitative learning in zebra finches.
雄性斑胸草雀（Taeniopygia guttata）在听觉-发声学习的敏感期通过模仿同种鸟类来习得歌声。实验室研究表明，歌声习得的敏感期涵盖了从孵化后25天至65天（dph）的发育阶段；听觉记忆的形成主要发生在25至35天龄之间。然而，敏感期的持续时间取决于是否有示范者。如果在发育早期没有示范者，即使幼鸟达到65天龄后，它们也会向引入笼中的成年雄性学习。直到63天龄才接触到第二个示范者的鸟类能够成功调整其歌声“模板”以学习新的歌声模式。然而，如果在65天龄之后接触第二个示范者的歌声，大多数个体将无法学习新示范者的歌声。在此，我们回顾了相关文献以及我们自己实验室关于斑胸草雀听觉记忆形成敏感期的新研究；这些行为研究表明，斑胸草雀的模仿学习存在发育限制。
