Wit H P, van Dijk P, Segenhout H M
Department of Experimental Otolaryngology, University Hospital, Groningen, The Netherlands.
Hear Res. 1996 Sep 1;98(1-2):165-8. doi: 10.1016/0378-5955(96)00082-2.
Frequency and impulse responses were determined for isolated guinea pig outer hair cells by electrically stimulating the cells between two wire electrodes with white noise. Cells were attached to the bottom of a small culture dish at one end while the other end was freely moving. Results have the character of a damped second-order system, with a cut-off frequency of approximately 7 kHz. Correspondingly, impulse responses show a single narrow peak roughly 50 microseconds wide and have the shape of the impulse response for a critically damped harmonic oscillator.
通过用白噪声在两个金属丝电极之间电刺激分离的豚鼠外毛细胞，测定其频率响应和脉冲响应。细胞一端附着在一个小培养皿底部，另一端自由活动。结果具有二阶阻尼系统的特征，截止频率约为7千赫。相应地，脉冲响应显示出一个宽度约为50微秒的单个窄峰，并且具有临界阻尼谐振子的脉冲响应形状。
