Study of the original and treatment of strabismus by EMG.

斜视的病因及治疗的肌电图研究。

基本信息

批准号：
62480365
负责人：
TAMURA Osamu
金额：
$ 2.5万
依托单位：
Ehime University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1989
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62480365/
关键词：
esotropia exotropia visually evoked cortical potential electro myo graphy proprioception of the ocular muscles 斜視 Magician's Forceps現象伸張反射

项目摘要

We have reported that the pathogenesis of strabismus is closely related to proprioceptive afferents. And it is supposed that the development of strabismus is under the influence of the visual input In this study, we demonstrated the proprioceptive afferent and visual input were cooperative for the developmental mechanism of strabismus. Cases studied here were esotropic patients aged from one year and two months to seven years and exotropic ones aged from fifteen to sixty two years. Visually evoked cortical potentials to flash stimulation (VECP) and electromyograph (EMG) were examined. Recordings of VECP were made from two electrodes located at O_2 and O_2. Monocular stimulation of each eye and binocular stimulation were used and the flash stimuli were projected to all visual fields of retina. EMGs of four horizontal rectal muscles were recorded either under general anesthesia for esotropic patients of children or in conscious patients with exotropia.In cases with esotropia, there was no difference in amplitude from both 0_1, and O_2 in binocular VECP. But in monocular VECP, we found the reduced amplitude. of contralateral VECP as compared with that of ipsilateral VECP. While all esotropic patients showed abnormal discharges in EMG, there was no difference in EMG in the patients with the disparities of amplitudes in monocular VECP. In exotropic patients we found no difference in monocular VECP and abnormal discharges in EMG. We suppose the mechanism of proprioception in exotropia affects the decussating optic system and that in esotropia acts on the non-decussating optic system. Because strabismus changes to be orthophorized under the light of less than 0.6 lux, the proprioceptive afferents might be In effect without visual input.Since some patients with esotropia showed the reduced amplitude of contralateral VECP monocularly stimulated, there may be a disorganization of devussated optic nerve fibers in esotropia.

我们报告说，斜视的发病机理与本体感受传入密切相关。据认为，斜视的发展是在本研究中视觉输入的影响下，我们证明了本体感受的传入和视觉输入是斜视的发育机制的合作。这里研究的病例是一年零两个月至七岁的杂色患者，以及年龄在15至62岁之间的外向患者。检查了视觉诱发的闪光刺激（VECP）和肌电图（EMG）的皮质潜力。 VECP的录音是由位于O_2和O_2的两个电极进行的。使用了每只眼睛和双眼刺激的单眼刺激，并将闪光刺激投射到视网膜的所有视野上。在全身麻醉下记录了四个水平直肠肌肉的EMG，或者是在全身性麻醉下，或有意识的外骨患者。在脑性患有息肉的情况下，双眼验VECP中的0_1和O_2振幅没有差异。但是在单眼VECP中，我们发现幅度降低。与同侧VECP相比，对侧VECP的VECP。尽管所有杂色患者在EMG中均出现异常出院，但单眼VECP振幅差异的患者EMG没有差异。在外型患者中，我们发现EMG中的单眼VECP和异常放电没有差异。我们假设外跨性别的本体感受的机制会影响十二期的视神经系统，而在杂色中，则对非塞脉冲的光学系统作用。由于在小于0.6 lux的情况下将斜视变化要进行矫正，因此如果没有视觉输入，本体感受的传入可能有效。由于一些急性性肝病患者表明，对侧VECP单眼的振幅降低了，因此可能会在Esotropia中散发出令人de乱的视觉纤维纤维。