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Dynamics of Inner Ear Pressure Change Caused by Intracranial Pressure Manipulation in the Guinea Pig
Acta Oto-Laryngologica, 2001Previous studies have shown that pressure changes in the cerebrospinal fluid compartment are transmitted to the inner ear. The main route for pressure transfer is the cochlear aqueduct. about which little is known with regard to its dynamic properties.
H P Wit
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Pressure-Regulating Mechanisms in the Inner Ear
ORL, 2010The perilymphatic pressure was studied in relation to pressure step variations in the external ear canal and in the middle ear. The transfer of pressure via the ossicular chain reached its limiting value at quite low pressures. When pressure steps were applied directly to the middle ear, there was almost a direct transfer of pressure for positive ...
O, Densert, B, Carlborg, J, Stagg
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Inner ear disorders due to pressure change
Clinical Otolaryngology and Allied Sciences, 1997We reviewed the records of 136 patients who had inner ear disorders including hearing loss and vertigo caused by pressure change. We divided them into three groups, according to the aetiology: group A, change in atmospheric pressure (diving, airplane travel, etc.); group B, rapid change in ear pressure in normal atmosphere (nose blowing, heavy lifting,
M, Kozuka +3 more
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Pressure freezing of the Earth's inner core
Physics of the Earth and Planetary Interiors, 1985Abstract In an earlier paper (Fearn and Loper), it was shown that secular cooling of a completely molten iron-poor core cannot account for the presence of the Earth's solid inner core. Here, we investigate an alternative; that at least part of the inner core formed very early in the history of the Earth, during the accretion/differentiation process ...
David R. Fearn, David E. Loper
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Resonant Pressure Transmission To The Inner Ear
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society Volume 13: 1991, 2005Engineering analysis of pressures in fluid-filled ducts and cavities is applied to the vertebrate inner ear. The human endolymphatic duct and combined utricle and saccule exhibit resonance in the auditory frequency range. The analysis can be used to develop more complex models of pressure transmission in inner ear ducts and cavites.
R.L. Seaman, R.P. Barron
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Effects of Middle Ear Pressure on the Inner Ear
Acta Oto-Laryngologica, 1977It was demonstrated in experiments on normal subjects that moderate ambient pressure changes, creating overpressure in the middle ear, may induce a vestibular reaction. In other experiments on subjects suffering from acute attacks of Meniere's disease, relief of symptoms was achieved by means of ambient pressure changes of the same magnitude.
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The effect of blood pressure on inner ear blood flow
Archives of Oto-Rhino-Laryngology, 1984We investigated the effects of blood pressure on the blood flow in the inner ear as compared with other organs in normotensive rats (NR), spontaneously hypertensive rats (SHR) and renal hypertensive rats (RHR). The cardiac output and the regional blood flow were measured by a radioactive microsphere technique in conscious rats. The haemodynamics of the
M, Sugiyama +5 more
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Water under inner pressure: A dielectric spectroscopy study
Physical Review E, 2014Water is the most studied substance on Earth. However, it is not completely understood why its structural and dynamical properties give rise to some anomalous behaviors. Some of them emerge when experiments at low temperatures and/or high pressures are performed.
Abril, Angulo-Sherman +1 more
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Modulation of inner ear pressure in experimental endolymphatic hydrops
Otolaryngology–Head and Neck Surgery, 1995Physiologic study of the guinea pig model of endolymphatic hydrops has been used to better understand the manifestations of Meniere's disease. Quantitative vestibular function testing demonstrates some changes in the hydrops subjects, especially if an additional stress such as postural inversion is imposed. Understanding the hydrodynamic changes on the
J C, Andrews, D, Strelioff
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Effect of Cell Inner Pressure on Deposition Volume in Microinjection
Langmuir, 2018Microinjection is a widely used technique for introducing exogenous materials into cells. Many applications of microinjection, such as gene editing and drug testing, rely on the accurate control of the deposition volume. However, the deposition volume in microinjection is presently calibrated in an open medium without considering the cell inner ...
Xian Wang +7 more
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