Sleep: Disorders and Clinical Implications
When an individual fails to fulfill the sleep demand, sleep debt starts accumulating. Sleep deficit for an extended period may cause severe complications such as excessive daytime sleepiness, mood swing, fatigue, irritability, anxiety, depression, inabili
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eep: Evolution and Functions
Sleep: Evolution and Functions
Vibha M. Jha • Sushil K. Jha
Sleep: Evolution and Functions
Vibha M. Jha School of Life Sciences Jawaharlal Nehru University New Delhi, Delhi, India
Sushil K. Jha School of Life Sciences Jawaharlal Nehru University New Delhi, Delhi, India
ISBN 978-981-15-7174-9 ISBN 978-981-15-7175-6 https://doi.org/10.1007/978-981-15-7175-6
(eBook)
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To our parents for always loving, supporting, and encouraging us. And To our three lovely angels Subhanshi, Suvali, and Sumanvi. You are the three pillars of our life. Without your love and understanding, it would not have been possible to complete this book. Vibha and Sushil
Preface
Mammalian species, including man, have almost exclusively provided the substrate for evaluating the intricate biological tapestry of sleep. Despite decades of intensive research, the functions and purpose of sleep remain elusive. By evaluating nonmammalian and mammalian organisms with a long evolutionary history may provide insight into our understanding of sleep and its functions. It may offer us some clues to find out the ways for sleep management and skills for our rapidly changing society, where the majority among us are living in a sleep-deficient condition. The electrophysiological expression of sleep varies across phylogeny. In mammals and birds, there are two well-known, cyclically alternating electrophysiological patterns of sleep. They are characterized as non-rapid eye movement (NREM) sleep having high-amplitude and slow-wave electroencephalogram (EEG) activity with reduced muscle tone. R
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