@lyngen Are you going to report the issue to Nihon Kohden?
If so, could you keep us updated?
Also, if there are any questions regarding the EDF format, I'm offering my help and you or Nihon Kohden
can contact me directly if necessary.
@Teuniz Thank you very much for your kind offer and support!
We have already reported the issue about .eeg file to Nihon Kohden and showed them this discussion. Unfortunately, we didn't get more information about the spec of .eeg format. They only said that the .eeg format from EEG-1260 is the same as EEG-1200. If Brainstorm can import EEG-1200 .eeg file, it should be able to import EEG-1260 .eeg file.
But I am worrying about the data quality in EDF format (please see the previous discussion). I am waiting for NK's response about whether the data quality in .edf format is the same as .eeg format.
NK uses int16 as well in their .eeg format. It makes sense to store the raw ADC data.