A polysomnography, commonly called a sleep study or polysomnogram, is a complex test aimed at detecting sleep disorders and evaluating an individual's sleep patterns. The sleep study entails the recording of a number of vital physiological parameters while the individual is asleep. These parameters include brain waves, eye movements, skeletal muscle activity, heart rate, breathing patterns, and oxygen levels.

Importants of Sleep Study Test:

1. **Diagnosing Sleep Disorders:** Sleep research has led to the identification of numerous sleep disorders, including sleep apnea, insomnia, narcolepsy, restless leg syndrome, and parasomnias related to REM sleep behavior and sleepwalking.
2. **Assessing Sleep Quality:** It can help inform us of sleep quality and architecture by displaying the length and area of time that different sleep stages take up.
3. **Monitoring Treatment Efficacy:** For people who are undergoing CPAP therapy for sleep apnea and other sleep disorders, sleep study can also be used to check how efficient the treatment is.
4. **Preventing Health Risks:** Sleep disorders can cause grave health risks, such as cardiorespiratory problems, diabetes, obesity, and cognitive deficits. Discovering and diagnosing these conditions may prevent negative consequences on the brain.