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In this experiment, two factors of curiosity and fear are used to control the behavior of animals in a new environment, and escapes are used to reflect the effect of these two factors. The animal's repeated head-dipping reflects its sense of novelty and desire to escape. It is generally believed that the drug increases the number and time of drilling at a dose that does not affect the animal's motor activity, which is an anxiolytic effect, and decreases the number and time of drilling is an anxiolytic effect.<br />The experimental device is an elevated orifice through which the animal's head can be drilled.