Reports

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

Abstract

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.