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biological rhythm |
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biological rhythmPeriodic biological fluctuation in an organism corresponding to and in response to periodic environmental change, such as day and night or high and low tide. The internal mechanism that maintains this rhythm even without the apparent environmental stimulus is a “biological clock.” When the rhythm is interrupted, the clock's adjustment is delayed, accounting for such phenomena as jet lag when traveling across time zones. Rhythms may have 24-hour (circadian rhythm), monthly, or annual cycles. See also photoperiodism. |
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They also found out that the disrupted sleep-wake cycle in the young mice can be reset by incorporating appropriate light environment with correct biological rhythm and difference in day and night. Foraging worker bees are the first insects known to have a social trigger radically change their biological rhythm, report Guy Bloch and Gene Robinson of the University of Illinois at Urbana-Champaign. But while the new study is useful in documenting how the body's internal clock and sleep patterns affect mood, ``none of this surprises me,'' said Charmane Eastman, director of the biological rhythms research laboratory at Rush-Presbyterian-St. |
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biological rhythm
