描绘自由移动果蝇的刻板行为
Mapping the stereotyped behaviour of freely-moving fruit flies
摘要：
大多数动物都有能力驱动各种各样的运动，表面上只受形态和物理学的限制。然而，在实践中，行为科学中一个常见的假设是，动物的大多数活动可以用一小部分刻板的图案来描述。在这里，我们介绍了一种映射生物体的行为空间的方法，只依赖于姿势运动数据的底层结构来组织和分类行为。我们发现，六种不同的果蝇物种，每一种都执行一种混合的非刻板行为和超过一百种等级组织的刻板行为。此外，我们使用这种方法来比较这些物种的行为空间，系统地识别密切相关的物种之间的细微行为差异。
英文摘要：
Most animals possess the ability to actuate a vast diversity of movements, ostensibly constrained only by morphology and physics. In practice, however, a frequent assumption in behavioral science is that most of an animal's activities can be described in terms of a small set of stereotyped motifs. Here we introduce a method for mapping the behavioral space of organisms, relying only upon the underlying structure of postural movement data to organize and classify behaviors. We find that six different drosophilid species each perform a mix of non-stereotyped actions and over one hundred hierarchically-organized, stereotyped behaviors. Moreover, we use this approach to compare these species' behavioral spaces, systematically identifying subtle behavioral differences between closely-related species.
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