The development of interlimb co-ordination during swimming in postnatal rats.
The development of interlimb co-ordination during swimming in postnatal rats.
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产后大鼠游泳过程中肢体间协调性的发展。
DOI：
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发表时间：
1979
影响因子：
2.8
通讯作者：
W. Trainer
中科院分区：
文献类型：
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作者：
A. Bekoff;W. Trainer
出生后个体发育的肢体间协调进行了研究，从出生后第1天到第22天的大鼠。研究了游泳而不是步行，以尽量减少幼年大鼠四肢肌肉虚弱的任何影响。录像带记录的游泳进行了分析，逐帧的基础上，以确定中风周期的持续时间为个人的肢体和肢体间的潜伏期和相位关系。在出生后第1天，四足脊椎动物游泳（或小跑）时典型的肢间协调已经存在，因此显然，这种行为的神经模式生成电路已经在这个阶段建立起来。在幼年大鼠中，可以看到1条肢体，或几乎任何2、3或4条肢体的组合，在游泳过程中移动，并且通常具有适当的相位关系。这表明，每个肢体都有自己独立的神经模式发生器，并且在游泳过程中，即使在非常早期的阶段，也有有效的肢体间协调机制来控制运动的肢体。在出生后的前两周，中风周期持续时间逐渐减少（频率增加）。这可能是由于成熟的感官输入。
The postnatal ontogeny of interlimb co-ordination was studied in rats from day 1 after birth to day 22. Swimming rather than walking was studied in order to minimize any effect of weak limb muscles in very young rats. Videotape records of swimming were analysed on a frame-by-frame basis to determine stroke cycle duration for individual limbs and interlimb latency and phase relationships. Interlimb co-ordination typical of swimming (or trotting) in adult quadrupedal vertebrates was already present on postnatal day 1, and so apparently the neural pattern generating circuitry for this behaviour is already established by this stage. In young rats it was possible to see 1 limb, or almost any combination of 2, 3 or 4 limbs, moving during swimming, and usually with proper phase relationships. This suggests that each limb has its own separate neural pattern generator and that there are effective interlimb co-ordinating mechanisms controlling moving limbs during swimming, even at very early stages. There was a gradual decrease in stroke cycle duration (increase in frequency) during the first two postnatal weeks. This may be due to maturing sensory input.