Bird-like propagating brain activity in anesthetized Nile crocodiles

Sleep

Tisdale, Ryan K^1¹  Beckers, Gabriel J L^3²  Lesku, John A^2³ 

[1] Avian Sleep Group, Max Planck Institute for Ornithology, Seewiesen, Germany^1;Cognitive Neurobiology and Helmholtz Institute, Utrecht University, Utrecht, The Netherlands^3;School of Life Sciences, La Trobe University, Melbourne, Australia^2

关键词: Crocodylus niloticus;    dorsal ventricular ridge;    evolution;    high-voltage sharp waves;    slow waves;    traveling;    propagating;    isoflurane;   

DOI  :  10.1093/sleep/zsy105

学科分类：生理学

来源: American Academy of Sleep Medicine

【 摘 要 】

Study ObjectivesThe changes in electroencephalogram (EEG) activity that characterize sleep and its sub-states—slow-wave sleep (SWS) and rapid eye movement (REM) sleep—are similar in mammals and birds. SWS is characterized by EEG slow waves resulting from the synchronous alternation of neuronal membrane potentials between hyperpolarized down-states with neuronal quiescence and depolarized up-states associated with action potentials. By contrast, studies of non-avian reptiles report the presence of high-voltage sharp waves (HShW) during sleep. How HShW relate to EEG phenomena occurring during mammalian and avian sleep is unclear. We investigated the spatiotemporal patterns of electrophysiological phenomena in Nile crocodiles (Crocodylus niloticus) anesthetized with isoflurane to determine whether they share similar spatiotemporal patterns to mammalian and avian slow waves.

【 授权许可】

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