Bretschneider F, Kroesbergen G, Beijnink F B
J Physiol (Paris). 1979;75(4):343-7.
Properties of catfish electroceptors were investigated by simultaneous recording of the skin potential and the activity of an afferent nerve. 1. The normal threshold stimulus intensity induces a potential amplitude of about 10 to 30 muV across the skin (Table I). 2. The average spike frequency in the nerve increases approximately with the logarithm of the stimulus intensity (Fig. 1). 3. The direct current restoring the receptor activity in calcium deficient media makes the skin potential more negative. 4. Presumably, not the skin potential itself but a difference between the skin potential and the e.m.f. generated by the receptor epithelium influences receptor functioning. 5. Amplitude and phase characteristics can be described by a filter circuit (Fig. 4 and 5).
通过同时记录皮肤电位和传入神经的活动来研究鲶鱼电感受器的特性。1. 正常阈值刺激强度会在皮肤表面诱发约10至30微伏的电位幅度（表I）。2. 神经中的平均脉冲频率大致随刺激强度的对数增加（图1）。3. 在缺钙培养基中恢复受体活性的直流电会使皮肤电位更负。4. 据推测，影响受体功能的可能不是皮肤电位本身，而是皮肤电位与受体上皮产生的电动势之间的差值。5. 幅度和相位特性可用滤波电路来描述（图4和5）。
