Psychology 1000 Chapter Notes - Chapter 5-8: Lucid Dream, Chronobiology, Seasonal Affective Disorder

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Lynn Jackson

Document Summary

A periodic, more or less regular fluctuation in a biological system, may or may not have psychological implications. We experience dozens of periodic, fairly regular ups and downs in psychological functioning. The synchronization of biological rhythms with external cues, such as fluctuations in daylight. Generated from within rather than by external cues. A biological rhythm with a period (from peak to peak or trough to trough) of about 24 hours. Exist in plants, animals, insects, and human beings. Reflect the adaptation of organisms to the many changes associated with the rotation of earth on its axis, such as changes in light, air pressure, and temperature. An area of the brain containing a biological clock that governs circadian rhythms. Tiny teardrop shaped cluster of cells in the hypothalamus. Responds to changes in light and dark and then sends out messages to the brain and body to adapt to these changes.