5 % are higher than the superior edge of endolymphatic sac . 3 . by retrolabyrinthine approach , rectangle incision of duramater got 116 . 80 mm2 surgery scope 颈静脉球顶高于后半规管下缘者占22 . 5 ；高于内淋巴囊上缘者占5 ；高于面神经锥段者占12 . 5 。
3.
Part 4 makes the efforts on the study of the effectiveness and the practicability of the erssma by the use of the skills of semicircular resection of the modern otology 第四部分将现代神经耳科保留听力的半规管切除技术和乙状窦后经内耳孔上入路相结合，研究扩大经内耳孔上入路的实用性和有效性。
4.
6 . posterior semicircular canal resection could get 15 10mni surgery scope . it could treat cerebellopontine angle lesions and save audition and balance , but could not treat internal acoustic meats lesions 颗骨内部和桥小脑角区的解剖学研究及其临床应用6 .后半规管切除可以获得约为15xl0 ~的手术操作范围，完全可以处理内听道口附近区域的较小病变。
5.
Super - posterior semicircular canal resection s scope is wider than posterior semicircular canal resection and could treat internal acoustic meats lesions too . conclusion : we get the scope of the two different incisions of duramater . study the effect of the sigmoid sinus , jugular bulb and cerebellopontine angle area to retrolabyrinthine approach surgery 后、上半规管切除在外半规管以下所得范围同后半规管切除相似，在外半规管平面以上可以有一较大的暴露范围，可以一直暴露到内听道口，甚至可以暴露内听道的全程，因此可以在直视下处理内听道内的病变。
6.
There had n ' t a report about the study on the microsurgical anatomy of this approach in our country and there were rarely found in the data overseas . the development of the neuro - otology has made it possible for the resection of the semicircular with the preservation of hearing . by the use of this skill , the removal range of the petrosal bone could be enlarged . this is called the expanding retrosigmoid approach 在保留听力的条件下将现代神经耳科学的半规管切除新技术和乙状窦后经内耳孔上入路结合起来，将使该手术入路得到扩展，这就是扩大乙状窦后经内耳孔上入路( erssma ) ，对它的显微外科解剖学研究，国内外来见报道。
7.
It has been studied on the mechanism of ci from the view of the interaction among semicircular canal , otolith organ and proprioceptor . but the studies on neurophysiology mechanism are not enough . some scholars think that a great number of 5 - hydroxytryptamine ( 5 - ht ) accumulating in nerve center , which induced by protein disturbance of metabolism resulting from acceleration stimulation , resulted in vestibular illusions 对于科里奥利错觉的发生机制，目前仅从半规管、耳石器、躯体本体感受器相互作用角度进行了探讨，缺乏对其中枢生理机制的研究，有学者认为，加速度作用造成的蛋白质代谢障碍，引起5 -羟色胺在中枢的大量堆积，是造成前庭性错觉的主要原因。
