Double Setup

The Double setup study aimed to validate the use of the Self applied somnography (SAS) system for use as a type-2 polysomnography system. Where the biggest difference between the gold standard PSG and the SAS being that the self applied system has a 4 channel frontal EEG and does not include the chin EMG. It further aimed to compare and validate the data from the wearables Empatica E4 and withings watches to the type 2 polysomnography measures.

Participants slept in their home invironment for one night with the following signals being recorded:

• SAS - includes frontal-EEG, respiratory signals(cannula, thorax and abdominal breathing belts and oximeter), EGC and EMG.
• Gold standard EEG - 6 channel EEG with reference electrodes behind ears and 2 EOG channels.
• Sweating in palm - Electrodermal activity(EDA) electrodes placed in participants palm.
• Empatica E4 watch
• Withings smartwatch