During an REM behavior disorder study, which additional channels are typically recorded?

In a study for REM sleep behavior disorder (RBD), it is essential to record additional channels focused on the physical movements that may occur during REM sleep. This disorder is characterized by the absence of normal muscle atonia during REM sleep, leading to physical acting out of dreams. Recording the legs is particularly relevant because individuals with RBD may exhibit abnormal movements, such as kicking or flailing during their dreams.

Alongside the leg movements, nasal airflow can also be measured to assess respiratory events that may occur during sleep, which can help in understanding the full context of the sleep study. The combination of these channels provides valuable insights into the motor activity and any potential associated respiratory disturbances during REM sleep, which are critical for accurately diagnosing and evaluating REM sleep behavior disorder.