Sinha Tarun, Lenhardt Martin
Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA.
Int Tinnitus J. 2011;16(2):130-4.
The eyes are acoustically continuous with the brain and inner ear tissues as regards matched impedances, based on tissue densities; thus, vibration of one site will be reflected in all sites. As a result, the eye reflects the acoustic properties of the brain under pressure, which can be used as a metric of intracranial pressure as demonstrated in a brain/eye balloon model. Further, the model supports the observation that vibration delivered to the eye, if of sufficient intensity, can be perceived as sound, resulting in an eye audiogram similar to that obtained conventionally by bone conduction on the mastoid or forehead. The eye can therefore be considered an acoustical window to the brain and inner ear.
基于组织密度，就匹配的阻抗而言，眼睛与大脑和内耳组织在声学上是连续的；因此，一个部位的振动会在所有部位得到反映。结果，眼睛在压力下反映大脑的声学特性，这在脑/眼气球模型中已得到证明，可作为颅内压的一个指标。此外，该模型支持这样的观察结果：传递到眼睛的振动，如果强度足够，可被感知为声音，从而得到类似于通过乳突或前额骨传导常规获得的眼听力图。因此，眼睛可被视为通往大脑和内耳的声学窗口。
