THE PROPRIOCEPTIVE FUNCTION OF A COMPLEX CHORDOTONAL ORGAN ASSOCIATED WITH THE MESOTHORACIC COXA IN LOCUSTS
THE PROPRIOCEPTIVE FUNCTION OF A COMPLEX CHORDOTONAL ORGAN ASSOCIATED WITH THE MESOTHORACIC COXA IN LOCUSTS
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DOI：
10.1007/bf00609673
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发表时间：
1982-01-01
期刊：
影响因子：
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通讯作者：
HUSTERT, R
中科院分区：
文献类型：
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作者：
HUSTERT, R
蝗虫中胸的弦音器官系统由4个亚单位组成，其中1个亚单位与基节相连。来自脊柱侧凸的本体感觉传入记录髋的旋转运动。通过正弦拉伸或模仿拉伸的运动对感觉系统的机械刺激，如在蝗虫的自然行走中，髋运动神经元的伸腿反射激活。对施加的运动的辅助反射和阻力反射都发生，但它们的强度可以从运动神经元中低于发射阈值的抑制期到向同一肌肉招募额外的运动神经元而变化。这些反射中的一些记录在孤立的准备工作也可以发生在自由行走的动物，他们应该有助于对抗运动之间的过渡肌肉协调。
A system of chordotonal organs in the locust mesothorax consists of 4 subunits, 1 of which connects to the coxa. Proprioceptive afferents from the scoloparia record the rotatory movements of the coxa. Mechanical stimulation of the sensory system by sinusoidal stretch or movements mimicking stretch as in natural walking of the locust elicits reflex activation of coxal motoneurons. Both assistance and resistance reflexes to imposed movements occur, but their intensity can vary from periods of suppression below firing threshold in a motoneuron to recruitment of additional motoneurons to the same muscle. Some of these reflexes recorded in isolated preparations can also occur in freely walking animals where they should contribute to the muscular coordination of transitions between antagonistic movements.