An Overview of Circadian Rhythm
|Course Name||An Overview of Circadian Rhythm|
Upon successful completion of this module, you will be able to:
- Define what is meant by the term “circadian rhythm”
- Identify the role that circadian rhythms play in human life
- Identify potential disorders related to those rhythms and indicate their causes
- Identify the available treatments for disorders in circadian rhythms
Course InformationCircadian rhythm describes the approximately 24-hour cycles that are generated by an organism. Most physiological systems demonstrate circadian variations. The systems with the most prominent variations are the sleep-wake cycle, thermoregulation, and the endocrine system.
Circadian rhythm disturbances can be categorized into 2 main groups:
1. transient disorders (e.g., jet lag; changed sleep schedule due to work, social responsibilities, illness)
2. and chronic disorders.
The most common chronic disorders are delayed sleep-phase syndrome (DSPS), advanced sleep-phase syndrome (ASPS), and irregular sleepwake cycle. Katzenberg et al suggested genetic correlation (i.e., clock polymorphisms) to circadian rhythm patterns.