调节牛蛙的耳朵。
Tuning in the bullfrog ear.
作者信息
Lewis E R
机构信息
Electronics Research Laboratory, University of California, Berkeley 94720.
出版信息
Biophys J. 1988 Mar;53(3):441-7. doi: 10.1016/S0006-3495(88)83120-5.
When electrical resonances were observed in acoustic sensory cells of lower vertebrates, the hearing research community was presented with the exciting possibility that tuning in the ears of those animals might be explained directly in terms of familiar molecular devices. It is reported here that in the frog sacculus, where electrical resonances have been observed in isolated hair cells, the effects of those resonances are completely obscured in the tuning properties of the sacculus in the intact ear. This observation has important implications not only for students of the ear, but for reductionist biologists in general. All of the dynamic properties of a system of connected, bidirectional processes are consequences of all of those processes at once; in such a system, the properties of an experimentally isolated subsystem may be totally obscured in the operation of the system as a whole.
当在低等脊椎动物的听觉感觉细胞中观察到电共振时，听力研究界面临着一个令人兴奋的可能性，即这些动物耳朵中的调谐可能直接用熟悉的分子装置来解释。本文报道，在青蛙的球囊（已在分离的毛细胞中观察到电共振）中，这些共振的效应在完整耳朵中球囊的调谐特性中完全被掩盖。这一观察结果不仅对耳朵研究人员，而且对一般的还原论生物学家都具有重要意义。一个由相互连接的双向过程组成的系统的所有动态特性，都是所有这些过程同时作用的结果；在这样一个系统中，实验分离的子系统的特性在整个系统的运行中可能会被完全掩盖。
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