What are the psychological functions of sleep and dreaming

What are the psychological functions of sleep and dreaming, and how do sleep disorders impact individuals’ cognitive functioning, emotional regulation, and overall well-being? Analyze research on the stages of sleep, sleep architecture, and the neurobiological basis of sleep regulation. Discuss common sleep disorders, such as insomnia, sleep apnea, and parasomnias, and their effects on daytime functioning and mental health. Additionally, explore theories of dreaming, including psychoanalytic, cognitive, and neurobiological perspectives, in understanding the meaning and function of dreams in the context of psychological health.