Statistical discrimination of natural modes of motion in rat exploratory behavior
Statistical discrimination of natural modes of motion in rat exploratory behavior
复制标题
DOI：
10.1016/s0165-0270(99)00194-6
复制
发表时间：
2000-03-15
影响因子：
3
通讯作者：
Golani, I
中科院分区：
文献类型：
--
作者：
Drai, D;Benjamini, Y;Golani, I
我们分析了大鼠在探索过程中的运动行为，并表明数字收集的数据（位置的时间序列）提供了足够的基础，建立大鼠使用几种不同的运动模式（第一，第二，第三，有时第四齿轮）。这些模式之间的区别是通过首先将时间序列分割成在停止之间发生的数据点序列（如在数据采集系统的分辨率内所确定的）来获得的。然后分析这些事件中的每一个内发生的运动的最大量的统计分布，并示出为多模态的。这使我们能够将运动分解为不同的模式。在这种分解的一个应用程序中，我们表明，行为学的特设概念停止行为对应于进展，而不离开第一档。我们通过证明这种进展的空间分布仅限于直径6.5 m的竞技场中20-50 cm的小范围来做到这一点。这为“原地不动”的结构提供了理由。这个结构不是根据在客观空间中的位置来定义的，而是纯粹根据老鼠自己的行为来定义的。我们测试我们的方法的一般性，将其应用到鼠标的探索行为。(C)2000 Elsevier Science B. V.保留所有权利。
We analyze the locomotor behavior of the rat during exploration, and show that digitally collected data (time series of positions) provide a sufftcient basis for establishing that the rat uses several distinct modes of motion (first, second, third, and sometimes fourth gear). The distinction between these modes is obtained by first segmenting the time series into sequences of data points occurring between arrests (as ascertained within the resolution of the data acquisition system). The statistical distribution of the maximal amount of motion occurring within each of these episodes is then analyzed and shown to be multi modal. This enables us to decompose motion into distinct modes. In one application of this decomposition we show that the ethological ad hoc notion of stopping behavior corresponds to progression without leaving first gear. We do so by showing that the spatial spread of such progressions is confined to a small 20-50 cm range in a 6.5 m diameter arena. This provides a justification for a construct of 'staying in place'. This construct is not defined in terms of position in objective space, but purely in terms of the rat's own behavior. We test the generality of our method by applying it to mouse exploratory behavior. (C) 2000 Elsevier Science B.V. All rights reserved.