Sampling rate for Pleth in HPAP

hey can i get the sampling rate in Hz for the Pleth signal in Home Positive Airway Pressure database please? it is written "10 or highest allowable rate" Thank you shirel

The Pleth signal sampling rate appears to vary between the clinical sites that participated in HomePAP. I opened up a handful of files and found 25 Hz, 64 Hz, and 100 Hz.

Thanks for checking out the site.

thank you can you please provide me a link to check it ? thank you

I opened the HomePAP EDF files in EDFbrowser to check - https://www.teuniz.net/edfbrowser/

You could also use software like (Luna) to systematically output header information (which contains signal sampling rates) for a batch of EDFs - https://zzz.bwh.harvard.edu/luna/

Hi i have an other question : it is written in the known issues that "Pleth signals have a blank physical dimension". what does it mean ? what does this refer to ?

It's referring to the signal metadata in the EDF headers for the home-based sleep studies. Sometimes sleep software developers do not output EDF headers to meet the EDF specifications.