<p>Histograms showing the average (mean ± SEM) percent of time that each group spent in the (A) open and (B) closed arms of the elevated plus maze, after a 2 week exposure to either NPP or LPP. Notice that there were no significant differences (unpaired t-test) in elevated plus maze performance were found between the two groups. Histograms showing (C) the average (mean ± SEM) distance traveled by each group, during the first exposure to each new context in the NOR chamber. Note that there were no significant differences (unpaired t-test) in locomotion between the NPP and LPP groups at any time point. Abbreviaions: NPP, normal photoperiod; LPP, long photoperiod.</p
