Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: Is a purpose of REM sleep atonia to help regenerate intervertebral disc volumetric loss? | Journal of Circadian Rhythms BioMed Central Open Access Is a purpose of REM sleep atonia to help regenerate intervertebral disc volumetric loss Jerome CJ Fryer Address Private Practice Nanaimo British Columbia V9S 3Y3 Canada Email Jerome CJ Fryer - drfryer@ Published 5 January 2009 Received 8 November 2008 Journal of Circadian Rhythms 2009 7 1 doi 1740-3391-7-1 Accepted 5 January 2009 This article is available from http content 7 1 1 2009 Fryer licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract The nature of atonia in sleep continues to be enigmatic. This article discusses a new hypothesis for complete core muscle relaxation in REM sleep suggesting a bottom-up recuperative perspective. That is does the atonia in REM sleep provide a utility to help restore the mechanobiology and respective diurnal intervertebral disc hydraulic loss By combining the effects of gravity with current compressive concepts in spinal stability this article looks at vertebral approximation as a deleterious experience with an intrinsic biological need to keep vertebrae separated. Methods using polysomnography and recumbent MRI are discussed. Background The goal of this article is to stimulate spine research in sleep. Specifically I ask whether REM atonia plays a mechanical function in assisting recuperative imbibition to diurnally influenced cartilaginous structures in mammalian species. Since the discovery of REM sleep researchers have been looking to the midbrain and surrounding parenchyma in search for answers with much progress in the neuro-mechanisms around the reticular formation. But do we know definitively the mechanical effects of REM s atonia on all diurnally influenced mammalian tissues To the
