Scheich H
Science. 1974 Jul 26;185(4148):365-7. doi: 10.1126/science.185.4148.365.
A fish of the genus Eigenmannia responds differently to a neighboring conspecific fish with a slightly higher frequency of the electric organ discharge than its own than to one with a slightly lower such frequency than its own. When the two frequencies are beating against each other the special wave shape of the electric organ discharge leads to asymmetries of the beat pattern which are distinct for the two cases. Midbrain neurons, called "deltaF recoders," sign and magnitude of the frequency difference on the basis of these patterns. that is, in the time rather than the frequency domain.
艾氏电鳗属的一种鱼对电器官放电频率略高于自身的相邻同种鱼的反应，与对电器官放电频率略低于自身的相邻同种鱼的反应不同。当两种频率相互拍频时，电器官放电的特殊波形会导致拍频模式的不对称，这两种情况是不同的。中脑神经元，称为“δF记录器”，根据这些模式（即在时间而非频域）来识别频率差的正负和大小。
