Physiological data was recorded in text files and acq/graph files.
As noted in the CNP database, we checked if the files existed and if it was complete (a full length file). We also checked if there was significant dropout in signal, which could be caused by touchy wiring, loose belt (due to subject size or discomfort), or faulty equipment.
Physio files differed greatly among subjects, so any peculiarity in the signal (other than signal dropout) is in the written notes.
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