The actigraphy is mainly used to estimate the sleep-wake cycle. It is widely used as an aid in the diagnosis of insomnia, parasomnia, circadian rhythm disorders, and sleep-related movement disorders.
In addition to the movement of the patient, additional signals can be recorded with an extra sensor. For example, a 1 channel EEG or ECG may be written or the temperature or respiration of the patient monitored. Thus, the possibilities for exact diagnosis are improved.