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The stria vascularis after ultrasonic irradiation. 超声照射后血管纹。
International journal of equilibrium research
Pub Date : 1973-06-01
J Stahle, J O Sugar

The cochleae of 51 guinea pigs were exposed to focused ultrasound of 1.25 megacycles. The ultrasonic probe, with a tip area of 1.8 mm2 was gently positioned against the otic capsule at the third coil from the base for 3 minutes at an intensity of 20 W/cm2. The only variable factor in this study was the survival time which was selectively set between 12 hours and 2 months. The stria vascularis was stained by the peroxidase-benzidine method. Circumscribed lesions of rather uniform character were found. The acute changes consisted of vascular constriction, thrombus formation, disruption and extravasation of blood. After survival times of one and two months, all vessels within a small segment of the spiral ligament and the stria vascularis had disappeared. No definite signs of revascularization of the target area were observed. Most of the pigment granules of the stria vascularis were dissolved within the treated zone. The effects of focused ultrasound and argon laser irradiation upon the vessels in the lateral wall of the cochlear duct have been compared.

将51只豚鼠耳蜗置于1.25兆周期聚焦超声下。超声探头的尖端面积为1.8 mm2，以20 W/cm2的强度轻轻放置在离基底第三个线圈的耳囊上3分钟。本研究中唯一的可变因素是生存时间，生存时间有选择地设定在12小时到2个月之间。用过氧化物酶-联苯胺法对血管纹进行染色。发现具有相当均匀特征的边界病变。急性病变表现为血管收缩、血栓形成、血管破裂和血液外溢。存活1个月和2个月后，螺旋韧带和血管纹一小段内的血管全部消失。靶区未见明确的血运重建迹象。血管纹色素颗粒大部分在处理区内溶解。本文比较了聚焦超声和氩激光照射对耳蜗管壁外壁血管的影响。
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引用次数: 0
The vestibular sensory cells and their innervation. 前庭感觉细胞及其神经支配。
International journal of equilibrium research
Pub Date : 1973-06-01
B Bergström, H Engström
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引用次数: 0
Comparative analysis of the rotatory, pendular and caloric vestibular nystagmus. 旋转性、钟摆性和热性前庭眼球震颤的比较分析。
International journal of equilibrium research
Pub Date : 1973-06-01
A Montandon, W Lehmann, F John, M Rohr
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引用次数: 0
Detection of endolymphatic hydrops by the administration of furosemid. 用速尿法检测内淋巴积液。
International journal of equilibrium research
Pub Date : 1973-06-01
M Kitahara, T Futaki, M Morimoto
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引用次数: 0
Central compensation of vestibular dysfunction: neuronal and central lesions. 前庭功能障碍的中枢代偿:神经元和中枢病变。
International journal of equilibrium research
Pub Date : 1973-06-01
C R Pfaltz, P Piffko, S Mishra
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引用次数: 0
Computer and human variation in the measurement of post caloric nystagmus. 热后眼震测量中计算机与人的差异。
International journal of equilibrium research
Pub Date : 1973-06-01
W Gentles, H O Barber
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引用次数: 0
Butterfly vestibulometry, a practical evaluation scheme. 蝴蝶前庭测量，实用的评估方案。
International journal of equilibrium research
Pub Date : 1973-06-01
C F Claussen
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引用次数: 0
Body sway induced by a low frequency alternating current. 由低频交流电引起的身体摇摆。
International journal of equilibrium research
Pub Date : 1973-06-01
A J Benson, P H Jobson

A sine wave current stimulus, applied between electrodes placed about one ear and an indifferent electrode, produced a cyclical sway predominantly in the coronal plane. In 12 normal subjects, stimulus frequency (0.1-0.6 Hz) and intensity (+/-0.05 - +/-1.5 mA) had no significant effect on the amplitude of the postural response, but phase lag increased from 0.7 rad at 0.1 Hz to 3.8 rad at 0.6 Hz. Stimulation at 0.3 Hz, +/-1.0 mA evoked detectable responses in all but one of 50 normal subjects. Seven patients with end organ lesions all gave positive responses with the same test procedure. Likewise 13 out of 16 patients with destruction of the VIII nerve also gave positive responses. In the other 3 patients the response on the side of the lesion was absent, as it was in another 3 individuals with lesions of the vestibular nuclei. It was concluded that the sway induced by a low frequency alternating current is the manifestation of the stimulation of structures within the CNS central to the vestibular nerve or its end organ.

一个正弦波电流刺激，在放置在一个耳朵周围的电极和一个无关的电极之间施加，产生了一个主要在冠状面上的周期性摆动。在12名正常受试者中，刺激频率(0.1 ~ 0.6 Hz)和强度(+/-0.05 ~ +/-1.5 mA)对体位反应幅度无显著影响，但相位滞后从0.1 Hz时的0.7 rad增加到0.6 Hz时的3.8 rad。0.3 Hz， +/-1.0 mA的刺激在50名正常受试者中引起了可检测的反应。7名终末器官病变患者在相同的测试程序中均给出了阳性反应。同样，16例VIII神经受损患者中有13例也出现了阳性反应。在其他3例患者中，病变一侧没有反应，另外3例前庭核病变患者也是如此。结论:低频交流电引起的摇摆是前庭神经中枢或其末梢器官的中枢神经系统结构受到刺激的表现。
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引用次数: 0
Experiments on fluid movements through the labyrinthine membranous walls. 流体在迷宫式膜壁中的运动实验。
International journal of equilibrium research
Pub Date : 1973-06-01
G F Dohlman

Methods were selected and tested for studying the flux of water through the labyrinthine walls. Mannitol which does not pass through the walls was used in isotonic concentration in the endolymphatic space, and various concentrations of mannitol solutions in the perilymph space created a concentration gradient which resulted in a flux of water through the membranous wall. This is a first step in investigating the flux of solutes and solvent through these walls of the labyrinth as a basis for studying substances which chronically increase the colloid osmotic pressure due to their difficulty in passing the walls.

选择并试验了研究水通过迷宫壁通量的方法。甘露醇不能通过细胞壁，在内淋巴空间中以等渗浓度使用，而在淋巴周围空间中不同浓度的甘露醇溶液产生浓度梯度，导致水通过膜壁。这是研究溶质和溶剂通过迷宫壁的通量的第一步，作为研究由于难以通过壁而长期增加胶体渗透压的物质的基础。
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引用次数: 0
The significance of optic fixation in tests of vestibular function. 视觉固定在前庭功能检查中的意义。
International journal of equilibrium research
Pub Date : 1973-06-01
J D Hood, M R Dix

Claims are often made that the electronystagmographic recording of induced nystagmic responses either with eye closure or in darkness enhances the sensitivity of the test. While this may be true of certain parameters it is not true of all and may in fact lead to a reduction in the diagnostic information obtainable with optic fixation upon a target.

经常有人声称，在闭上眼睛或在黑暗中使用眼震电图记录诱发的眼球震反应可以提高测试的灵敏度。虽然这可能对某些参数是正确的，但并非对所有参数都是正确的，并且实际上可能导致光学固定在目标上可获得的诊断信息减少。
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引用次数: 0
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