de Weerd P, Vandenbussche E, Orban G A
Laboratory for Neuro- and Psychophysiology, Leuven Catholic University, Belgium.
Behav Brain Res. 1990 Jan 1;36(1-2):1-12. doi: 10.1016/0166-4328(90)90153-6.
We have developed an adaptive training method which considerably reduces the total time required to train cats to threshold in an orientation discrimination task. During training, the animals are given greater exposure in time to the positive stimulus compared to the negative one. Therefore, this method has been coined the differential exposure method (DEM). The greater exposure to the positive stimulus reduces the number of errors an animal commits during training and thereby enhances speed of learning. Indeed, with the DEM, 34 daily sessions sufficed to train cats to threshold for 2 different reference orientations. Furthermore, the DEM was effective not only for simple stimuli such as real bars but also for complex stimuli such as illusory contours. Finally, the DEM was equally effective for training naive cats which had undergone large visual cortical lesions as it was for normal animals.
我们开发了一种适应性训练方法，该方法可大幅减少在方向辨别任务中训练猫达到阈值所需的总时间。在训练过程中，与负性刺激相比，动物在正性刺激上所花费的时间更多。因此，这种方法被称为差异暴露法（DEM）。对正性刺激的更多暴露减少了动物在训练期间所犯错误的数量，从而提高了学习速度。事实上，使用差异暴露法时，34次每日训练就足以将猫训练到两种不同参考方向的阈值。此外，差异暴露法不仅对真实条纹等简单刺激有效，对虚幻轮廓等复杂刺激也有效。最后，差异暴露法对训练经历过大面积视觉皮层损伤的新生猫和正常动物同样有效。
