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Time course of the light/dark test. Percent time spent in the lit compartment is represented within 5 min bins over the 25 min test period. Linear regressions: WT: y = -0.37 x + 52.6 (R2 = 0.49); KO: y = 1.66 x + 36.98 (R2 = 0.94). WT n = 9, KO n = 10.
