Margolis R H, Smith P
J Speech Hear Res. 1977 Sep;20(3):437-46. doi: 10.1044/jshr.2003.437.
Tympanometric asymmetry was investigated in 17 normal adult subjects. Experimental variables included transmission quantity, probe frequency, direction of pressure change, and type of probe tip. Tympanograms were characterized by systematic asymmetries that appeared to be related predominantly to middle-ear effects, although ear canal effects probably contributed to the asymmetries as well. Implications for the standardization of measurement procedures are discussed.
对17名正常成年受试者的鼓室导抗图不对称性进行了研究。实验变量包括声能传递量、探测频率、压力变化方向和探头类型。鼓室导抗图的特点是存在系统性不对称，这似乎主要与中耳效应有关，不过耳道效应可能也对这种不对称有影响。文中讨论了测量程序标准化的相关问题。
