Calculating Phase Shifts

With the onset times identified, least-squares fits to the onsets have been calculated for two different time periods. Shift-Clicking on the actogram within the raster for a given day will now display the time delay between the two fitted lines extrapolated to that day. Here, for example, the phase shift of 2.24 hours is being displayed for line 30. The TAU’s for the two fits, here 23.6 and 23.75 hours, are also displayed for the user (not shown). Setting up the fits and displaying the phase difference takes only a few mouse clicks.