Blood Pressure Changes during Human Sleep

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Science  06 Dec 1963:
Vol. 142, Issue 3597, pp. 1313-1314
DOI: 10.1126/science.142.3597.1313


Systolic blood pressure measurements were made on normal human subjects throughout entire nights of natural sleep and were correlated with cyclical changes in electroencephalographic patterns. During the recurrent rapid-eye-movement phase of sleep mean blood pressure levels were found to be generally higher, and the minute-to-minute variability of level was much greater than during the remainder of sleep.