An Approach to Quantifying Various Types of Spontaneous Activity

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Science  01 May 1959:
Vol. 129, Issue 3357, pp. 1229-1231
DOI: 10.1126/science.129.3357.1229


The output of an activity-measuring device is fed into low- and high-gain cumulative recorder channels which are reset to zero after different time periods. The records, inscribed at various paper speeds, are easily quantified. The tracing patterns can be identified with specific activities of undisturbed animals. The activities are monitored by means of closed-circuit television.