Daily Light Sensitivity Rhythm in a Rodent

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Science  01 Jan 1960:
Vol. 131, Issue 3392, pp. 33-35
DOI: 10.1126/science.131.3392.33


Single 10-minute light periods can cause a phase shift in the rhythm of the daily locomotor activity of flying squirrels otherwise maintained in constant darkness. A daily rhythm of sensitivity to these standard light periods was found.