Hattori M, Mimura O, Haruta R, Uyama J, Shimo-Oku M
Jpn J Ophthalmol. 1986;30(4):453-60.
Single fiber electromyography (SFEMG) was carried out in the extraocular muscles (EOMs) of 40 adult cats, and the recordings were analyzed. The small fluctuations of the interpotential interval (IPI), so-called "jitter phenomenon", were represented quantitatively as a mean consecutive difference (MCD). The MCD and the IPI recorded from the orbital layer of the rectus muscles were similar among the 4 rectus muscles: the MCD and the mean IPI measured in 58 motor units from the 4 rectus muscles averaged 25.82 microseconds and 0.94 ms, respectively. These values were similar to those recorded from the oblique muscles. The MCD and IPI were 34.12 microseconds and 1.70 ms, respectively, in the retractor bulbi muscles and 45.54 microseconds and 1.23 ms, respectively, in the triceps muscles. The MCDs of the rectus and inferior oblique muscles were considerably smaller than those in the retractor bulbi and the skeletal muscles.
对40只成年猫的眼外肌进行了单纤维肌电图（SFEMG）检查，并对记录进行了分析。电位间期（IPI）的微小波动，即所谓的“颤抖现象”，被定量表示为平均连续差值（MCD）。从四条直肌的眶层记录的MCD和IPI在四条直肌中相似：从四条直肌的58个运动单位测量的MCD和平均IPI分别平均为25.82微秒和0.94毫秒。这些值与从斜肌记录的值相似。眼球退缩肌的MCD和IPI分别为34.12微秒和1.70毫秒，三头肌的MCD和IPI分别为45.54微秒和1.23毫秒。直肌和下斜肌的MCD明显小于眼球退缩肌和骨骼肌的MCD。
