Multi-joint coordination during walking and foothold searching in the Blaberus cockroach. I. Kinematics and electromyograms.
Multi-joint coordination during walking and foothold searching in the Blaberus cockroach. I. Kinematics and electromyograms.
复制标题
Blaberus 蟑螂行走和寻找立足点时的多关节协调。
DOI：
10.1152/jn.2000.83.6.3323
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发表时间：
2000
影响因子：
2.5
通讯作者：
R. Ritzmann
中科院分区：
文献类型：
--
作者：
Andrew K. Tryba;R. Ritzmann
当蟑螂被拴在一个光滑的玻璃盘上时，它们被诱导行走或寻找立足点。我们结合腿部关节运动的运动学分析和腿部伸肌在拴系行走和搜索过程中的肌电(EMG)记录来表征这些行为。系绳准备为多关节运动学和神经分析提供了技术优势。然而，系留准备的行为相关性是一个重要的问题。为了解决这个问题，我们通过将拴住行走的运动学参数与之前从以相同速度在跑步机上自由行走的蟑螂收集的类似数据进行比较，来评估拴住动物的效果。在大多数关节运动学参数上，拴系行走和跑步机行走之间没有显著差异。相比之下，拴系行走和搜索的比较表明，通过运动学和电学数据的分析可以区分这两种行为。我们结合关节运动学和肌电分析来检测行走和搜索过程中多关节协调性的变化。在搜索过程中，中腿关节在摆动时伸展，而不是在站立时(即行走)，在行走和搜索过程中，髋关节粗隆和股骨胫骨关节的运动协调性和伸肌运动神经元活动明显不同。我们还发现，搜索时中腿的肌电活动模式与行走时前腿的肌电活动模式相似。
Cockroaches were induced to walk or search for a foothold while they were tethered above a glass plate made slick with microtome oil. We combined kinematic analysis of leg joint movements with electromyographic (EMG) recordings from leg extensor muscles during tethered walking and searching to characterize these behaviors. The tethered preparation provides technical advantages for multi-joint kinematic and neural analysis. However, the behavioral relevance of the tethered preparation is an important issue. To address this issue, we evaluated the effects of tethering the animals by comparing kinematic parameters of tethered walking with similar data collected previously from cockroaches walking freely on a treadmill at the same speeds. No significant differences between tethered and treadmill walking were found for most joint kinematic parameters. In contrast, comparison of tethered walking and searching showed that the two behaviors can be distinguished by analysis of kinematics and electrical data. We combined analysis of joint kinematics and electromyograms to examine the change in multi-joint coordination during walking and searching. During searching, middle leg joints extended during swing rather than stance (i.e., walking) and the coordination of movements and extensor motor neuron activity at the coxa-trochanteral and femur tibia joints differed significantly during walking and searching. We also found that the pattern of myographic activity in the middle leg during searching was similar to that in the front legs during walking.
DOI：
--
发表时间：
1987-11
期刊：
The Journal of experimental biology
影响因子：
--
作者：
F. Delcomyn
通讯作者：
F. Delcomyn