![]() The N3 and N4 stages are periods of deep sleep without eye and muscle movements. True sleep begins with stage N2, where eye movements stop and brain activity decreases. N1 is a light sleep stage with slow eye and muscle movements. The NREM sleep stages are sequentially indicative of light to deep sleep. ![]() The wake stage is the period of awakening before sleep. Furthermore, NREM sleep state is divided into four stages, namely NREM N1, N2, N3, and N4 (Aboalayon, 2014). Sleep is a dynamic process and includes different sleep stages, including the waking, non-rapid eye movement (NREM), and rapid eye movement (REM) stages. Sleep monitoring is one of the most significant activities in the assessment of sleep-related disturbances and other neural problems. Moreover, numerous sleep disorders can be clinically diagnosed with the help of computer-aided technologies (Hassan, 2016). Some of these disorders can be treated with proper analysis of early symptoms in such cases, adequate sleep quality is essential for the patient’s recovery. Insomnia, parasomnias, sleep-related breathing difficulties, hypersomnia, bruxism, narcolepsy, and circadian rhythm disorders are some common examples of sleep-related disorders. This public health challenge greatly affects quality of life in terms of both physical and mental health. Sleep disorders are common in all subsets of the population, independently of gender. Poor sleep can lead to a variety of neurological disorders (Panossian, 2009 Smaldone, 2007). ![]() Nowadays, people of all age groups are affected by improper sleep quality. Despite a good deal of research investment, sleep quality continues to be a crucial public challenge. ![]() Maintaining proper health and mental stability is critical for overall health and well-being. ![]()
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