Exploratory studies of abnormal behavior in the rat.

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Abstract
Using several groups of rats, the investigators studied the convulsion-producing effect of several kinds of stimulating situations. The Lashley jumping-box technique with both gates locked and a mild shock caused no seizures. A swinging cage situation induced no convulsive attacks. Mild auditory stimulation under a small cage also gave negative results. Increasing the intensity of the sound resulted in seizures. A copper mesh cage, which afforded no escape and which was electrified, gave negative results even when the shock was increased to the point that the rat was tetanized. A Lashley jumping box was used to train rats on a series of grey cards until they reached an absolute failure. A mild shock was administered. No seizures were obtained. Each rat after reaching the failure level was paired with a control (untrained) rat and the 2 then subjected to the bell-stimulus situation. Seizures were obtained in each group, the exptl. showing a slightly higher frequency.

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