<p>(a, left) Sleep profiles of <i>Oregon R</i> (<i>OR</i>) males following 4 days of pair-wise social interaction. (a, right) Daytime and nighttime sleep latency is significantly lower (<i>p <</i> 0.05, Student’s <i>t</i>-test) as compared to that of solitary controls. (b, left) Sleep profiles of <i>Iso31</i> males following 4 days of pair-wise social interaction. (b, right) Although sleep latency of socialized males is also decreased, it did not reach statistically significant levels (<i>p ></i> 0.05, Student’s <i>t</i>-test). (c) Daytime sleep of socialized <i>OR</i> males (<i>p <</i> 0.0001, Student’s <i>t</i>-test; <i>n</i> = 16 for each group) and <i>Iso31</i> males (<i>p <</i> 0.0005, Student’s <i>t</i>-test; <i>n</i> = 15 for each group) is significantly greater as compared to that of solitary controls. Other details are same as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0150596#pone.0150596.g001" target="_blank">Fig 1</a>.</p
