Abstract
Abstract Data accumulated in recent years have shown the existence of multiple about 90 min ultradian rhythms in gastric motility, urine flow and osmolality and physiologic indices of arousal. While these data support Kleitman's hypothesis that the REM‐NONREM sleep cycles are only fragments of a 24‐h rhythm (Basic Rest‐Activity Cycle) which is manifested in wakefulness in recurrent fluctuations in arousal, it further indicates that both the sleep and the waking rhythms are part of a more complex multioscillatory system with a dominant periodicity centered at 90 min.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.