Albers H E, Lydic R, Gander P H, Moore-Ede M C
Neurosci Lett. 1981 Dec 11;27(2):119-24. doi: 10.1016/0304-3940(81)90254-8.
The circadian organization of squirrel monkey drinking behavior was examined in constant illumination following lesions which totally destroyed the suprachiasmatic nuclei. Although these lesions eventually led to a severe disruption in the temporal organization of drinking behavior, a statistically significant circadian pattern of drinking was observed in each monkey for at least 4-6 weeks after lesioning.