Body Signal Recording Device

A device capable of recording messages from the sleep world is necessary, for example an EOG or EMG recording device. In practice it might be a feasible idea to use the same device as was used for sleep recording: If for example an EEG system is used as a sleep recording device, it can be possible to find body signals in the EEG data without having to implement another device. These body signals can even be of different nature than the ones used for REM detection, for example eye movement artifacts in the EEG signal.

Again, it is possible to use multiple parallel body signal types, in order to increase the speed of communication.