Symposium on 'Morphology and Physiology of Semicircular Canal Ampulla'. A new light on caloric test. What was disclosed by three dimensional analysis of caloric nystagmus?
نویسندگان
چکیده
منابع مشابه
Spatial orientation of caloric nystagmus in semicircular canal-plugged monkeys.
We studied caloric nystagmus before and after plugging all six semicircular canals to determine whether velocity storage contributed to the spatial orientation of caloric nystagmus. Monkeys were stimulated unilaterally with cold ( approximately 20 degrees C) water while upright, supine, prone, right-side down, and left-side down. The decline in the slow phase velocity vector was determined over...
متن کامل[Caloric response of the isolated semicircular canal].
In order to investigate the mechanism of caloric response, thermal stimuli were applied to the partially isolated semicircular canal of the bull frog. Warming or cooling stimulus to the canal side changed the ampullary nerve activity. When the semicircular canal was placed in the horizontal plane, thermal stimulus induced monophasic response, which is possibly due to a change in the density of ...
متن کاملTHE EFFECT OF ELECTROSTIMULATION ON CALORIC-INDUCED NYSTAGMUS: A PRELIMINARY STUDY
The objective of this study was to describe the role of electrical stimulation in controlling peripheral vertigo. In a prospective study on 13 healthy volunteers, nystagmus was induced with caloric stimulation and the interval of nystagmus disappearance was recorded. This time indicates the basal response of vestibular end-organ. After caloric irrigation, pulsed signal was applied for each...
متن کاملinvestigation of effective parameters on the rigidity of light composite diaphragms (psscb) by fem
در این رساله با معرفی سقف های psscb متشکل از ترکیب ورق های فولادی ذوزنقه ای و تخته های سیمانی الیافی به عنوان سقف های پیش ساخته (سازگار با سیستم سازه ای قاب های فولادی سبک) به بررسی پارامترهای موثر بر صلبیت سقف، پرداخته می شود. در تحقیق حاضر ابتدا به مدل سازی دو نمونه سقف آزمایش شده، به روش اجزاء محدود با استفاده از نرم افزار تحلیلی abaqus ver 6.10 پرداخته شده است. نمونه های ساخته شده تحت اعما...
Evaluation of vertical semicircular canal function by the caloric test--a study on patients with benign paroxysmal positional vertigo.
The morbidity of benign paroxysmal positional vertigo (BPPV) was investigated from the functional standpoint by analyzing nystagmus elicited by the caloric test. As a result of an investigation of the three (horizontal, vertical and torsional) components of the nystagmus elicited by the caloric stimulus (cold water), the vertical nystagmus differed in direction between the left and the right ea...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biological Sciences in Space
سال: 2001
ISSN: 0914-9201,1349-967X
DOI: 10.2187/bss.15.387