Photoperiodic Flowering Part 2
Part 2, the advanced mechanisms how plants measure night- and day-length to determine when to flower
Luciferase Reporters in Circadian Research
Learn how luciferase reporters are used in circadian biology
Luciferase Reporters for Mammals in Circadian Research
Learn how luciferase reporters are used to study circadian rhythms in mammals
Cellular Oscillators
Learn about "clocks in a dish," and how in vitro mammalian clocks can be used to study circadian rhythms
The 2-Process Model of Sleep
Learn how a homeostatic drive and the circadian clock control the timing of sleep
Entrainment Simulator
Explore basic concepts of circadian entrainment, phase response curves, and phase shifts with our Entrainment Simulator
Fluence Response Curves and Action Spectra Series
Discover how action spectra are derived from fluence response curves
An Introduction to Chronobiology
Read our three-part introduction to basic concepts in chronobiology
Cyanobacterial Circadian Oscillator
Discover how three proteins interact to make a circadian oscillator mechanism in the cyanobacterium Synechococcus elongatus
Mammalian Molecular Entrainment to Light and Networks
Learn how light information alters the molecular circadian clock to promote entrainment
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
Effects of Sleep Deprivation on Attention and Mood
Learn about the effects of sleep deprivation on attention and mood.
In-Lab Video Series: Rodent Wheel-Running Experiment
Learn how to design, perform, and analyze a rodent wheel-running experiment.
Cyanobacterial Circadian Clock Output Mechanism
Discover how the core circadian oscillator in the cyanobacterium Synechococcus elongatus sends output to regulate timing
The Suprachiasmatic Nucleus: Lesion & Transplant Experiments
Learn about landmark experiments that demonstrated the role of the suprachiasmatic nucleus (SCN) in circadian rhythms
The Transcriptomic Motion Picture of Marine Microbes
A blog post about understanding daily rhythms in marine microbes.
Establishing the Genetic Basis of Circadian Rhythms: A Landmark Study
Learn about basic property of free-running periods of circadian oscillators
Interview with Dr. Carrie Partch
Hear Dr. Partch discuss the structural underpinnings of molecular clocks
Time Memory in Bees
Learn about landmark experiments that established internal clocks as the source of circadian rhythms in animals
Healthy Light Exposure Infographic
Learn the do's and don'ts of light exposure that affect circadian rhythms and sleep
Avian Photoreception
Virtually perform landmark experiments in avian circadian photoreception with our "Ex-Sparrow-ment" Simulator
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.