Phase Response Curves
Understand phase response curves, an important - but tricky! - circadian concept
Entrainment Simulator
Explore basic concepts of circadian entrainment, phase response curves, and phase shifts with our Entrainment Simulator
Human Circadian Variation: Genetic Approaches
Learn how genetic manipulations in model organisms and in vitro establish circadian links to human variation in chronotype
Time Memory in Bees
Learn about landmark experiments that established internal clocks as the source of circadian rhythms in animals
Mammalian Molecular Entrainment to Light and Networks
Learn how light information alters the molecular circadian clock to promote entrainment
Interview with Dr. Lance Kriegsfeld
Hear Dr. Kriegsfeld discuss circadian rhythms and neuroendocrinology
Interview with Dr. Carrie Partch
Hear Dr. Partch discuss the structural underpinnings of molecular clocks
Circadian Clock-Controlled Genes Part 1
An introductory tutorial video on the mechanisms of mammalian molecular circadian clock regulation, and how the clock regulates other genes.
Exploring Processes C and S Part 1: Napping Protocol
Learn how sleep researchers use a "napping" protocol to separate effects of processes C and S on sleep
Luciferase Reporters for Cyanobacteria in Circadian Research
Learn how luciferase reporters are used to study circadian rhythms in cyanobacteria
Cyanobacterial Circadian Clock Output Mechanism
Discover how the core circadian oscillator in the cyanobacterium Synechococcus elongatus sends output to regulate timing
In-Lab Video Series: Rodent Wheel-Running Experiment
Learn how to design, perform, and analyze a rodent wheel-running experiment.
Establishing the Genetic Basis of Circadian Rhythms: A Landmark Study
Learn about basic property of free-running periods of circadian oscillators
Luciferase Reporters in Circadian Research
Learn how luciferase reporters are used in circadian biology
The Suprachiasmatic Nucleus: Lesion & Transplant Experiments
Learn about landmark experiments that demonstrated the role of the suprachiasmatic nucleus (SCN) in circadian rhythms
The 2-Process Model of Sleep
Learn how a homeostatic drive and the circadian clock control the timing of sleep
Avian Photoreception
Virtually perform landmark experiments in avian circadian photoreception with our "Ex-Sparrow-ment" Simulator
Common Clock Mechanism Graphics Tool
Use our free editable powerpoint file of mammalian, fly, and plant molecular clock mechanisms in presentations and papers
Structural Changes of the Cyanobacterial Clock
Watch the structural nanomachine of the cyanobacterial circadian oscillator come to life in this video made by our colleagues.
Healthy Light Exposure Infographic
Learn the do's and don'ts of light exposure that affect circadian rhythms and sleep