Dr. Herzog studies the cellular and molecular basis for circadian rhythms, focusing on the suprachiasmatic nucleus of the hypothalamus. By combining electrophysiological and molecular imaging techniques, his lab is identifying pacemaking cells and how these cells coordinate their activities to drive behavior. The lab compares the circadian rhythms expressed behaviorally and by cells and tissues using a variety of techniques including behavioral monitoring and imaging with multielectrode recordings, bioluminescence and fluorescence from animals carrying transgenic reporters. Trainees in the Herzog lab pursue optical and digital imaging of low-light bioluminescence, fluorescence, and bright-field preparations. Dr. Herzog received an Outstanding Mentor Award in 2008. Collaborators: Holy, Culver, Taghert.