颅内压力可经耳蜗导水管和内耳道的筛板传人外淋巴间隙。过去认为,耳蜗导水管由一障膜所关闭,近来研究发现有时并无这种障膜存在。婴儿和成人的耳蜗导水管大小形状也不尽相同。作者推测,某些成人可能有婴儿型的耳蜗导水管持续存在,使颅压变化更易传人鼓阶。动物实验 Intracranial pressure can pass through the cochlear duct and the trachea of ​​the inner ear passage of the perilymph space. In the past that the cochlear duct is closed by a barrier membrane, the recent study found that sometimes there is no such barrier exists. Cochlear catheters of infants and adults also vary in size and shape. The authors hypothesize that some adults may have a baby-type cochlear duct that persists, making changes in intracranial pressure more prevalent. Animal experiment