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Figure 26 | Journal of Circadian Rhythms

Figure 26

From: Transdisciplinary unifying implications of circadian findings in the 1950s

Figure 26

Changing amplitude of some components in a partial spectral element of the postnatal human systolic blood pressure chronome. Data from a healthy boy, born 19.10.1992, whose blood pressure was measured at mostly 30-minute intervals from 20.10 for the ensuing 40 days, and analyzed as a moving spectrum in separate weekly intervals, displaced in 12-hour increments through the data set. An initially greater prominence of infradians (see ~1 week c, left), shown by height and darker shading, corresponding to a larger amplitude, contrasts with the prominence of circadians and circasemidians in later weeks of life, while any ultradians with still higher frequencies and any trends and chaos, two other chronome elements, are here unassessed. Side view of a gliding spectral window of amplitudes of systolic blood pressure, focusing on infradians and circadians in the first 40 days of life of a boy born at term (FW). The prominence of the infradian spectral components immediately after birth is apparent from shading, height and arrows. In this side view, better than in a view from the top (Figs. 27, 29 and 31), a general impression is best gained of the time course of a gradual resurgence of a circadian component. The circadian is demonstrable on the day of birth as a group phenomenon (not shown herein). The circadian seems to be lost in this graph and the following graphs in Figs. 27,28,29,30,31,32 with the interval of one week used for analysis. Original data of Yoshihiko Watanabe.

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