So his lab began studying the brains of these birds while they listened to audio recordings.

于是，他的研究所开始研究这些鸟类，给它们放一些录音，观察他们的大脑。

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Some were given the words at night (played via an audio recording), then required to stay awake until morning in the lab.

一些志愿者通过音频录音在夜间接受单词，然后他们必须一直保持清醒状态直到早上来实验室接受测试。

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Greg Budney, audio curator at the Cornell Lab of Ornithology's Macaulay Library, a renowned collection of recorded bird song, says he has had requests to use the collection for medical purposes but hasn't heard of bird song being used to fight crime.

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In a lab game, she compared groups who met face to face, with those who had audio and video meetings.

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