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Related Concept Videos

Sleep-Wake Cycles01:24

Sleep-Wake Cycles

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Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and  rapid eye movement (REM).
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Related Experiment Video

Updated: Feb 1, 2026

Simple Surgical Induction of Conductive Hearing Loss with Verification Using Otoscope Visualization and Behavioral Clap Startle Response in Rat
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Simple Surgical Induction of Conductive Hearing Loss with Verification Using Otoscope Visualization and Behavioral Clap Startle Response in Rat

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Wake-up call from Hong Kong

Victor J Dzau1, Marcia McNutt2, Chunli Bai3

  • 1Victor J. Dzau is the president of the U.S. National Academy of Medicine. vdzau@nas.edu.

Science (New York, N.Y.)
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No abstract available in PubMed .

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