Entrainment Simulator
Explore basic concepts of circadian entrainment, phase response curves, and phase shifts with our Entrainment 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.
Exploring Processes C and S Part 2: Forced Desynchrony
Learn how sleep researchers use a "forced desynchrony" protocol to separate effects of processes C and S on sleep
Phase Response Curves
Understand phase response curves, an important - but tricky! - circadian concept
Luciferase Reporters in Circadian Research
Learn how luciferase reporters are used in circadian biology
Human Circadian Variation: Genetic Approaches
Learn how genetic manipulations in model organisms and in vitro establish circadian links to human variation in chronotype
The 2-Process Model of Sleep
Learn how a homeostatic drive and the circadian clock control the timing of sleep
Common Clock Mechanism Graphics Tool
Use our free editable powerpoint file of mammalian, fly, and plant molecular clock mechanisms in presentations and papers
Links Between Mood Disorders and Circadian Rhythms
Learn about the behavioral assays and gene manipulations used in rodent models to explore links between circadian rhythms and mood disorders
Luciferase Reporters for Cyanobacteria in Circadian Research
Learn how luciferase reporters are used to study circadian rhythms in cyanobacteria
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.
Bioluminescent and Fluorescent Reporters in Circadian Rhythm Studies
Read about the biology, application, and experimental design of fluorescent reporters in circadian studies
Avian Photoreception
Virtually perform landmark experiments in avian circadian photoreception with our "Ex-Sparrow-ment" Simulator
Time Memory in Bees
Learn about landmark experiments that established internal clocks as the source of circadian rhythms in animals
Effects of Sleep Deprivation on Attention and Mood
Learn about the effects of sleep deprivation on attention and mood.
Cellular Oscillators
Learn about "clocks in a dish," and how in vitro mammalian clocks can be used to study circadian rhythms
In-Lab Video Series: Rodent Wheel-Running Experiment
Learn how to design, perform, and analyze a rodent wheel-running experiment.
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 Mammals in Circadian Research
Learn how luciferase reporters are used to study circadian rhythms in mammals
Photoperiodic Flowering Part 2
Part 2, the advanced mechanisms how plants measure night- and day-length to determine when to flower