PERIODICITY IN HUMAN BEINGS AND MICE 867 



of life. To the extent to which such measurements will become reliably 

 and reproducibly feasible, problems of synchronization and desyn- 

 chronization among rhythms will become amenable to study. If, as 

 seems likely, such problems revolve around basic aspects of func- 

 tional integration in time, as well as of environmental adaptation, 

 periodicity analysis may serve as an instrument for functional resolu- 

 tion in time, just as the microscope serves for structural resolution in 

 space. 



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