Michael C. Tackenberg

The paper shows that optogenetic activation of VIPergic SCN neurons mimics the effects of extended photoperiod on circadian rhythms and behavior.

This study shows the chi-square periodogram (CSP) underestimates biological rhythm periods, especially in short time-courses, and recommends using alternative methods like the Lomb-Scargle periodogram.

The paper investigates how different components of photoperiodic light influence circadian clock properties through behavioral and SCN measurements.