Reymann K, Haschke W
Acta Biol Med Ger. 1980;39(4):393-401.
The dependence on biological significance of the stimulus of averaged evoked potentials (AEP) to flash from visual and sensomotory cortex and from the dorsal hippocampus were studied in alert rabbits in the example of a conditioned reflex (BR) with food reinforcement. The AEP to conditioned flash from visual cortex showed a surface positivation at the end of the early section (67-76 ms) and at the beginning of the late section of the potential (100 to 180 ms) in comparison with AEP to "indifferent" stimuli in a pseudoconditioning (PC). Typical for the visual and sensomotory cortex of trained hungry, but not satiated animals was the occurrence of a positive component (Sp130) with mean peak latency of 130 ms. The shortest EMG-onset corresponded with the beginning of the positivation or the Sp130-component. Records of the CA1-field of the dorsal hippocampus showed changes already 40 to 60 ms after the flash. Possible conclusions about the functional meaning of EP-changes, depending on the biological significance of the signal, are discussed.
在以食物强化的条件反射（BR）为例的清醒家兔中，研究了视觉和感觉运动皮层以及背侧海马体对闪光的平均诱发电位（AEP）刺激的生物学意义依赖性。与假条件反射（PC）中对“无关”刺激的AEP相比，视觉皮层对条件闪光的AEP在早期部分结束时（67 - 76毫秒）和电位晚期部分开始时（100至180毫秒）出现表面正性变化。训练有素的饥饿但未饱食动物的视觉和感觉运动皮层的典型特征是出现平均峰值潜伏期为130毫秒的正性成分（Sp130）。最短的肌电图起始与正性变化或Sp130成分的开始相对应。背侧海马体CA1区的记录显示，闪光后40至60毫秒就出现了变化。讨论了根据信号的生物学意义对诱发电位变化的功能意义得出的可能结论。
