Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of...
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Transcript of Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of...
![Page 1: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/1.jpg)
Circadian Rhythms
Only write notes for slides with this symbol.Psych I: Take notes on pg 25 of Portfolio
![Page 2: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/2.jpg)
What are Circadian Rhythms?
• Research conducted in caves, as well as in modern sleep laboratories where the environment is completely time-free, has proven that the human body is governed by built-in time setters, commonly referred to as an internal body clock.
![Page 3: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/3.jpg)
What are Circadian Rhythms?
• Over 100 body functions fluctuate between their minimum and maximum values once a day.
• These fluctuations in human functioning take about a day's time to complete—roughly 25 hours—the term circadian rhythms was coined (circadian means "about a day" in Latin).
• Dr. Franz Halberg of Germany first used this term in 1959 to describe these changing body functions.
![Page 4: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/4.jpg)
![Page 5: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/5.jpg)
![Page 6: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/6.jpg)
Temperature• One of the most easily
measured of these circadian rhythms is the body temperature.
• Healthy humans experience rhythmic variations in their body temperature throughout the course of each day.
![Page 7: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/7.jpg)
Temperature • For most people, the difference
between high and low values is about two degrees Fahrenheit (97° to 99°)
• Lowest value typically occurring in the early morning hours (2:00 a.m. to 5:00 a.m.)
• Highest values commonly occurring in the evening (7:00 p.m. to 10:00 p.m.).
![Page 8: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/8.jpg)
Temperature
• Studies in which the body temperature has been monitored in a time-free environment have shown that our temperature level fluctuates in the same 25- to 26-hour pattern, no matter when we sleep or when we are awake. In short, our body temperature cycle operates independently of our sleep/wake cycle.
![Page 9: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/9.jpg)
Internal Desynchronization
• When the sleep/wake and body temperature cycles are no longer "in sync" with each other, we experience a condition known as internal desynchronization.
• An employee placed on the night shift must suddenly ignore the light-dark patterns in the external environment, and try to sleep at a time when the body temperature clock is telling him or her to be most alert and active.
![Page 10: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/10.jpg)
Circadian Rhythms Experiment
• For two days (this weekend) You will measure your temperature using a thermometer every 2 hours from the time you get up in the morning to the time you go to sleep.
• (If you can't measure your temperature every 2 hours, then just measure it as often as it is feasible).
• Don't eat or drink anything 15 minutes before you take your temperature.
![Page 11: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/11.jpg)
Circadian Rhythms Experiment • Make sure to take your temperature the same way
every time and that you read the temperature VERY ACCURATELY....the differences in your body temperature are only a few 0.1 of a degree.
• Chart your body temperature– Assess your state of alertness (asleep to hyper)– Record body temperature to nearest 0.1°F – Notes: Record what you were doing at the time
(Reading, running)– Only take temperature while sitting – Do NOT do it
while driving, walking, running or any other activity where you could bite the thermometer
![Page 12: Circadian Rhythms Only write notes for slides with this symbol. Psych I: Take notes on pg 25 of Portfolio.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649f585503460f94c7e232/html5/thumbnails/12.jpg)
Alertness Rating Scale Chart
Planned Time Actual Time Alertness Rating Body Temp Notes:
7:00 AM 7:15 AM 2 96.8°F Just woke up
9:00 AM 9:00 AM 4 97.9 TV
Asleep Drowsy Relaxed Alert Intense Manic
1 2 4 6 8 10
Psych I: Use page 26 in portfolio to put this chart on.