myers8 - Ninth Edition in Modules David Myers Module 8:...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Psychology,  Ninth Edition in Modules David Myers Module 8: Sleep and Dreams
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Biological Rhythms and Sleep Circadian Rhythms   occur on a 24-hour cycle and include sleep  and wakefulness. Termed our “biological clock,” it can be  altered by artificial light. Light triggers the suprachiasmatic nucleus to decrease (morning) melatonin from the pineal gland and increase (evening) it at nightfall.
Background image of page 2
Measuring sleep: About every 90 minutes, we pass  through a cycle of five distinct sleep stages. Sleep Stages Hank Morgan/ Rainbow
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Brain Waves and Sleep Stages Alpha Waves slow waves of a relaxed, awake brain Delta Waves large, slow waves of deep sleep Hallucinations false sensory experiences
Background image of page 4
Awake but Relaxed When an individual closes his eyes but remains awake,  his brain activity slows down to a large amplitude and  slow, regular  alpha waves (9-14 cps) .   A meditating  person exhibits an alpha brain activity.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
During early, light sleep (stages 1-2) the brain enters a  high-amplitude, slow, regular wave form called  theta  waves (5-8 cps) . A person who is  daydreaming shows  theta activity. Sleep Stages 1-2 Theta Waves
Background image of page 6
down. There are large-amplitude, slow  delta waves  (1.5-4 cps) . Sleep Stages 3-4
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/21/2012 for the course PSYCH 101 taught by Professor Ennis during the Winter '09 term at Waterloo.

Page1 / 22

myers8 - Ninth Edition in Modules David Myers Module 8:...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online