Biological Rhythms
- Created by: georgia-merle
- Created on: 05-02-18 16:12
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- Biological Rhythms
- Circadian Rhythms
- Driven by...
- Internal Pacemakers
- Suprachias-matic Nucleus
- Exogenous Zeitgebers
- External
- Light
- Internal Pacemakers
- 24 Hour Cycle
- Siffre
- 25 hour Circadian Rhythm
- Regular Sleep/Wake Cycle
- Aschoff and Wever
- WW2 Bunker
- Circadian Rhythm of 24 - 25 hours
- Evaluation
- Practical Application to Shift Work
- Practical Application to Drug Treatment
- Case Studies and Small Samples
- Poor control in research studies
- Individual differences may be an influence on results
- Driven by...
- Infradian Rhythms
- More than 24 Hour Cycle
- Female Menstrual Cycle
- 28 Days
- Stern and McClintock (1998)
- 29 women with irregular periods
- Pheromones taken at different stages via a cotton pad
- Cleaned with alcohol and rubbed on lips of the other women
- 68% of women experienced changed to their cycle
- Seasonal Affective Disorder (SAD)
- Seasonal Pattern
- Winter months due to lack of daylight
- Depressive Disorder
- Seasonal Pattern
- Evaluation
- Research on the Menstrual Cycle shows its evolutionary values
- Ultradian Rhythms
- Less than 24 hours
- 5 Stages of sleep
- Stages 1 and 2 - Light Sleep
- Stages 3 and 4 - Deep Sleep
- Stage 5 - Rapid Eye Movement (REM)
- Methodology used in synchronisati-on studies
- Evidence supports qualitatively different stages in sleep
- Research in this area is the use of animal studies
- Research into SAD is its practical application
- Ultradian Rhythms
- Less than 24 hours
- 5 Stages of sleep
- Stages 1 and 2 - Light Sleep
- Stages 3 and 4 - Deep Sleep
- Stage 5 - Rapid Eye Movement (REM)
- Endrogenous Pacemakers and Exogenous Zeitgebers
- Endogenous Pacemakers
- The Suprachiasmatic nucleus
- DeCoursey et al (2000)
- Chipmunks
- Ralph et al. (1990)
- Hamsters
- Exogenous Zeitgebers
- Light
- Campbell and Murphy (1998)
- Social cues
- Evaluation
- Research into the SCN is that it may obscure other body clocks
- Use of Animals
- Influence of exogenous zeitgebers may be overstated
- Methodological issues in exogenous zeitgebers research
- Endogenous pacemakers and exogenous zeitgebers interact
- Endogenous Pacemakers
- Disruption to Biological Rhythms
- Jet Lag
- Shift Lag
- Circadian Rhythms
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