Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Life Sciences
Daily Rhythm Of Cerebral Blood Flow Velocity, Deirdre A. Conroy, Arthur J. Spielman, Rebecca Q. Scott
Daily Rhythm Of Cerebral Blood Flow Velocity, Deirdre A. Conroy, Arthur J. Spielman, Rebecca Q. Scott
Publications and Research
Background: CBFV (cerebral blood flow velocity) is lower in the morning than in the afternoon and evening. Two hypotheses have been proposed to explain the time of day changes in CBFV: 1) CBFV changes are due to sleep-associated processes or 2) time of day changes in CBFV are due to an endogenous circadian rhythm independent of sleep. The aim of this study was to examine CBFV over 30 hours of sustained wakefulness to determine whether CBFV exhibits fluctuations associated with time of day.
Methods: Eleven subjects underwent a modified constant routine protocol. CBFV from the middle cerebral artery was monitored …