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Psychosomatic Medicine 4:75-80 (1942)
© 1942 American Psychosomatic Society
1 Department of Physiology, McGill University, Montreal, Canada
Previous observations in this laboratory revealed that the simple procedure of exposing animals to pure tones of threshold loudness led eventually to a temporary behavioural upset. In the present studies the same procedure was found to precipitate a much more complex and enduring disturbance, which in one cat subject culminated in episodes of vomiting, in two others of uncontrolled micturition, in the conditioning cage. The derangements could be attributed, in Pavlovian terminology, to disturbances between the fundamental nervous processes of excitation and inhibition. Neither the vomiting nor the excessive general bodily activity was influenced by bromide sedation. On the other hand, prolonged rest from training, and also training with loud (easily perceived) tone stimuli had a marked beneficial effect.
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