Hi Francois,
first of all thanks for your time.
I think signals (EOG, EMG, EKG) are correctly recorded (can normally view on Galileo suite and other sleep staging software).
Actually EDF file has different sampling rate (EEG and EMG 256 Hz, EOG and ECG 128 Hz), I had to set values down due to limited storage volume of our old portable recording hardware.
Next week I’ll try to analyze a file with same sampling rate, otherwise I’ll try to export tracks in another format (in hypothesis were a specific EDF problem).
If both tests will fail, I’m gonna update you and send an example file.
Thank you so much,
Matteo