A portrait of locomotor behaviour in Drosophila determined by a video-tracking paradigm
A portrait of locomotor behaviour in Drosophila determined by a video-tracking paradigm
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DOI：
10.1016/j.beproc.2004.04.003
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发表时间：
2004-09-30
影响因子：
1.3
通讯作者：
Martin, JR
中科院分区：
文献类型：
--
作者：
Martin, JR
本文描述了一只果蝇在一个正方形小竞技场中自由行走的运动行为。运动活动监测的视频跟踪范例。提取多个参数来构建运动活动的肖像：移动的总距离，活动和不活动的次数，活动的持续时间和平均步行速度。为了开始对苍蝇的空间行走运动进行量化，还确定了虚拟中心区域中的通道数量。此外，为了揭示飞行轨迹，作为飞行器导航能力的指标，测量了转向角、角速度和曲折。最后，我们表明，不活动的事件作为其持续时间的函数的数量遵循幂律，而它的对应物，活动的事件不，这表明运动活动的整体模式坚持分形结构。值得注意的是，这些参数中的大多数是性二态的。运动活动的这种精细描述代表了一种新的工具，这将有助于研究不同的大脑结构在运动活动组织中的作用，以及苍蝇运动及其动机控制的中央模式发生器的定位。(C)2004 Elsevier B.V.保留所有权利。
This paper presents a detailed characterisation of locomotor behaviour of a single Drosophila fly freely walking in a small square arena. Locomotor activity is monitored by a video-tracking paradigm. Multiple parameters are extracted to construct the portrait of locomotor activity: the total distance moved, the number of episodes of activity and inactivity, the duration of activity, and the mean walking speed. To initiate a quantification of the fly's spatial walking movements, the number of passages in a virtual centre zone has also been determined. Moreover, to reveal the trajectory, as an index of fly's navigation ability, the turning angle, the angular velocity and the meander have been measured. Finally, we show that the number of episodes of inactivity as function of their duration follows a power law, while its counterpart, the episodes of activity does not, suggesting that the overall pattern of locomotor activity adheres to a fractal-like structure. Remarkably, the majority of these parameters are sexually dimorphic. This fine description of locomotor activity represents a new tool which will facilitate the study of the role of the different brain structures in the organisation of locomotor activity and the localisation of the fly's central pattern generator for locomotion and its motivational control. (C) 2004 Elsevier B.V. All rights reserved.