Cazals Y, Horner K
Acta Otolaryngol. 1987 May-Jun;103(5-6):572-7.
Two pure tones presented simultaneously to one ear can produce physiologically and perceptively other tones called distortion products which originate in the inner ear. Notable differences exist between their physiological and perceptive features. In physiological experiments the anesthesia may alter the functioning of the cochlea, especially its efferent system. Physiological measurements made of distortion products taken from the same animals under anesthesia or in the awake state were compared using round window cochlear microphonic responses and evoked potentials from the eighth nerve and the auditory cortex. The physiological measures appeared unaltered by anesthesia, but in both the awake and anesthetized states, repeated measuring at intervals of several minutes could show apparently random variations of a few decibels.
同时呈现给一只耳朵的两个纯音能够产生源自内耳的、在生理和感知上均不同的其他音调，即畸变产物。它们的生理特征和感知特征存在显著差异。在生理实验中，麻醉可能会改变耳蜗的功能，尤其是其传出系统。使用圆窗耳蜗微音响应以及来自第八神经和听觉皮层的诱发电位，对在麻醉状态或清醒状态下取自同一动物的畸变产物进行的生理测量结果进行了比较。生理测量结果似乎未受麻醉影响，但在清醒和麻醉状态下，每隔几分钟重复测量都可能显示出几分贝的明显随机变化。
