Observation of animal behavior by revolving activity cage method

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  • 回転かご法による動物行動の観測
  • カイテン カゴホウ ニヨル ドウブツ コウドウ ノ カンソク
  • A new automatic measuring and recording system of motor activity of a mouse by means of revolving activity cage is presented

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Abstract

With this system, several parameters can be recorded continuously over several months without exterior stimuli. Time per revolution is counted and punched into the paper tape as binary coded numbers, and the number of revolutions and the frequency of “passage” in a given time are printed out on a rolled paper by a digital recorder. “Passage” is defined as one revolving trial without a pause over a fixed time (criterion time) and used as a behavioral unit of “stop and go”. The raw data on the paper tape are processed and analyzed with a general-purpose computer. It was confirmed that when a mouse became well accustomed to the revolving activity cage, the time per revolution followed the law of exponential distribution probability, while the length of passage (i.e. the number of revolutions per revolving trial) followed that of geometrical distribution probability. The revolving activity of mice treated with single subcutaneous injection of methamphetamine was examined using these parameters.

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