ONTOGENY OF LEG MOTOR OUTPUT IN CHICK-EMBRYO - NEURAL ANALYSIS
ONTOGENY OF LEG MOTOR OUTPUT IN CHICK-EMBRYO - NEURAL ANALYSIS
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DOI：
10.1016/0006-8993(76)91025-8
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发表时间：
1976-01-01
期刊：
影响因子：
2.9
通讯作者：
BEKOFF, A
中科院分区：
文献类型：
--
作者：
BEKOFF, A
在孵化过程中（孵化20天）的鸡胚腿的运动输出的特点是使用肌电图（EMG）记录从确定的膝盖和脚踝肌肉。发现了一种高度协调的运动输出模式，并将其用作比较年轻胚胎（孵育7、9、13、17和19天）运动输出的标准。尽管不同年龄的胚胎的EMG记录在某些方面存在很大差异，但观察到肌肉激活的一致模式。对肌肉之间的相位和潜伏期关系的定量分析表明，至少有一些元素的神经回路参与产生孵化电机输出可能会制定非常早期的发展。持续时间与潜伏期图显示，在发育过程中拮抗肌之间的交替时间模式逐渐细化。
The motor output of the leg of the chick embryo during hatching (20 days of incubation) was characterized using electromyographic (EMG) recordings from identified knee and ankle muscles. A highly coordinated pattern of motor output was found and used as a standard against which to compare the motor output from younger embryos (7,9,13,17 and 19 days of incubation). Despite large differences in some aspects of the EMG records from embryos of different ages, consistent patterns of muscle activation were observed. Quantitative analysis of phase and latency relationships between pairs of muscles indicated that at least some elements of the neural circuitry involved in generating the hatching motor output may be laid down very early in development. Duration vs. latency plots revealed that there is a gradual refinement in the temporal pattern of alternation between antagonist muscles during development.