Stimulation-evoked eye movements with and without the lateral rectus muscle pulley.
Stimulation-evoked eye movements with and without the lateral rectus muscle pulley.
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有或没有外直肌滑轮的刺激引起的眼球运动。
DOI：
10.1152/jn.00622.2003
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Goldberg,StephenJ
中科院分区：
文献类型：
--
作者：
Dimitrova,DianaM;Shall,MaryS;Goldberg,StephenJ
最近的研究表明，眼外肌(EOM)滑轮由胶原、弹性蛋白和平滑肌肉组成，属于眼睛周围的组织。高分辨率磁共振成像似乎表明，滑轮既可以约束也可以改变EOMS的牵引路径。主动滑轮假说认为，EOMS的轨道层插入到滑轮上，并用于控制滑轮。根据解剖学数据，主动滑轮假说还表明，眼眶层不会在眼眶内旋转眼睛；这是由肌肉的整体层完成的。然而，目前还没有生理学数据来证实这一假设。在这里，我们在麻醉的猴子和猫中使用刺激诱发的眼球运动，通过移除外侧骨眶和邻近的眼眶组织来破坏外侧直肌滑轮。这些结构的缺失导致猫的眼球运动幅度和速度增加，在灵长类动物中为外侧，在猫科动物中为内侧。猫的垂直眼球运动没有受到明显影响。结果表明，这些增加，限于水平眼动的幅度和速度，可能归因于轨道内的被动特性。关于主动滑轮假说，我们不能辨别出眼球侧向暴露的明显影响(就运动的幅度或速度而言)，这可能直接归因于主动的横向滑轮系统。
Recent studies have suggested that extraocular muscle (EOM) pulleys, composed of collagen, elastin, and smooth muscle, are among the tissues surrounding the eye. High-resolution magnetic-resonance imaging appears to indicate that the pulleys serve to both constrain and alter the pulling paths of the EOMs. The active pulley hypothesis suggests that the orbital layer of the EOMs inserts on the pulley and serves to control it. Based on anatomical data, the active pulley hypothesis also suggests that the orbital layer does not rotate the eye within the orbit; this is done by the global layer of the muscle. However, no physiological data exist to confirm this hypothesis. Here we used stimulation-evoked eye movements in anesthetized monkeys and cats before and after destruction of the lateral rectus muscle pulley by removal of the lateral bony orbit and adjacent orbital tissue. The absence of these structures resulted in increased lateral, in the primate, and medial, in the cat, eye-movement amplitude and velocity. Vertical eye movements in the cat were not significantly affected. The results indicate that these increases, confined to horizontal eye-movement amplitude and velocity, may be attributed to passive properties within the orbit. In relation to the active pulley hypothesis, we could discern no clear impact (in terms of amplitude or velocity profile of the movements) of lateral eye exposure that could be directly attributable to the active lateral pulley system.
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作者：
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影响因子：
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作者：
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DOI：
--
发表时间：
1981
期刊：
Boletin de estudios medicos y biologicos
影响因子：
--
作者：
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通讯作者：
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DOI：
10.1007/bf00315560
发表时间：
1975-01-01
期刊：
ANATOMY AND EMBRYOLOGY
影响因子：
--
作者：
MAYR, R;GOTTSCHALL, J;NEUHUBER, W
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NEUHUBER, W