Explain the Four Stages of NREM Sleep

question 52

Essay

Explain the four stages of NREM sleep.

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Definitions:

Psychotic

Relating to psychosis, a mental disorder characterized by a disconnection from reality, which may include hallucinations and delusions.

Major Depression

A condition of mental well-being defined by an enduring period of depression or diminished interest in pursuits, resulting in major disruptions in daily living.

Catatonic

Relating to or characterized by catatonia, a state of immobility and unresponsiveness in someone who is otherwise awake.

Melancholic

A subtype of depression characterized by severe features, such as early morning awakening, significant weight loss, and excessive guilt.