Hypnogram

Hypnogram

Definition

A hypnogram is a visual representation of your sleep patterns over the night. It shows different stages of sleep, like light sleep, deep sleep, and REM sleep, helping you understand how well you rest.

Example

When shopping for a new mattress, you might look at a hypnogram from a sleep tracker to see if your current mattress is affecting your sleep quality.

Synonyms

sleep graph sleep chart sleep pattern diagram

Frequently Asked Questions

What is the purpose of a hypnogram?

A hypnogram is a visual representation of sleep stages over time, used to analyze sleep patterns and diagnose sleep disorders. It helps clinicians understand the quality and architecture of a person's sleep.

What does a normal hypnogram look like?

A normal hypnogram typically shows cycles of REM and non-REM sleep, with distinct stages like light sleep, deep sleep, and REM occurring in a predictable pattern throughout the night. Each cycle usually lasts about 90 minutes.

How to read a hypnogram?

To read a hypnogram, identify the different sleep stages represented on the vertical axis, while the horizontal axis shows time. Look for patterns of sleep cycles, noting the duration and frequency of each stage.

What is the hypnogram on a sleep study?

In a sleep study, the hypnogram is a key output that illustrates the patient's sleep stages throughout the night, allowing for the assessment of sleep quality and identification of any abnormalities or disorders.

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