PSYO 3264 Study Guide - Quiz Guide: Kurt Richter, Carl Linnaeus, Chronobiology
23 Apr 2022
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Review questions for chapter 2 - studying sleep and circadian rhythms. First reference of daily rhythms are in the ____ First to describe activity pattern governed by a biological rhythm. Reported that he took the sensitive plants and put them in a darkened closet and left them there for many days. Peaked in periodically to see position of leafs. Concluded that plant continued to have sleep movements regardless of lack of sunlight, said that it could sense the sun (dead wrong) Eventually discovered that this was due to an internal biological clock. Kurt richter invented running wheel to measure rats activity without disturbing them. If blinded, their period was not 24 hours. Rhythms that are generated near a 24 hour period (though not exactly). Leftward slant demonstrates the animal waking up earlier and earlier. Internally generated circadian rhythm is synchronized to light/dark cycle (entrained) An organism with an internal clock by synchronized to an external cycle (eg. light and dark)
