A case study of the free-running circadian period of a morning type subject in time isolation


Introduction Morning type and evening type individuals (M-types and E-types) differ an average of 2.1h in the phase of their endogenous circadian rhythmicity (Kerkhof & Van Dongen, 1996). It has also been hypothesized (Kerkhof, 1985) that Mtypes and E-types may differ in their free-running circadian period (tau). In order to address this issue, we… (More)


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