Heretofore, we have expounded mainly on memory on the basis of experiments with the behavior of dogs, and to some degree we have also studied it in all types of vertebrates, from fish to monkeys. In this work, all aspects of memory were studied: image, emotional, and conditioned-reflex. We employed the same method of free movement. Since study of memory is possible only on animals that are well accustomed to the experimental environment, to the same experimenter, and to all of his procedures, it was necessary to accustom the animals these experimental conditions for greater or lesser periods of time.
KeywordsElectrical Stimulation Conditioned Stimulus Conditioned Reflex Conditional Signal Painful Stimulation
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