Relationship between SCN electrical activity levels and behavioral activity timing and intensity under short, intermediate, or long T-cycles.

The relationship between SCN electrical activity levels and behavioral activity timing and intensity is unaltered by exposure to short or long T-cycles. The timing of the SCN electrical activity trough and the median of behavioral activity are similarly and significantly affected by the duration of the T-cycle (P-values for one-way ANOVA). In all T-cycle durations, the timing of electrical activity trough and behavior median was equal (Bonferroni corrected paired samples t-tests). The interaction between the intensity of behavioral activity and the level of SCN electrical activity was quantified by linear regression from 0% to 50% SCN electrical activity level. Slopes and elevations of the regression lines were equal under all T-cycle durations (P-values for F-Test).Relationship between SCN electrical activity levels and behavioral activity timing and intensity under short, intermediate, or long T-cycles.