Normal Sleep Cycle Diagram. Stages 1 to 3 are whats considered non rapid eye movement nrem sleep also known as quiet sleep. Normal sleep school aged children need between 10 and 11 hours of sleep per night.
In normal sleep there is an ultradian rhythm of cycling between slow wave sleep sws and rapid eye movement rem sleep stages the rem nonrem cycle. It is a phenomenon observed in all animals in some form. A lot happens in your body while you sleep.
It is a phenomenon observed in all animals in some form.
Stages 1 to 3 are whats considered non rapid eye movement nrem sleep also known as quiet sleep. Sleep is a rapidly reversible state of reduced responsiveness motor activity and metabolism 1. Rem sleep respiration is typically characterized by an increased frequency and a reduced regularity. During sleep our heart rate drops our body temperature falls and we experience complex changes in brain activity so that we experience different stages of sleep and we sleep in cycles.