Discrepancies in registration time

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1

Hello everyone,

  • MNE version: 1.6.0
  • operating system: Windows 10

Reading the database readme ds000247 it says that there are subjects x 5 minute resting sessions eyes open, but then the records are of different times and even the number of channels is different in a couple of them, can someone confirm that this is the case? Is it normal or is there some error there?

*Experiment

  • 5 subjects x 5 minute resting sessions, eyes open

MEG acquisition

  • Recorded at the Montreal Neurological Institute in 2012-2016
  • Acquisition with CTF 275 MEG system at 2400Hz sampling rate
  • Anti-aliasing low-pass filter at 600Hz, files may be saved with or without the CTF 3rd order gradient compensation
  • Recorded channels (at least 297), include:
    • 26 MEG reference sensors (#2-#27)
    • 270 MEG axial gradiometers (#28-#297)
    • 1 ECG bipolar (EEG057/#298) - Not available in the empty room recordings
    • 1 vertical EOG bipolar (EEG058/#299) - Not available in the empty room recordings
    • 1 horizontal EOG bipolar (EEG059/#300) - Not available in the empty room recordings*

thanks for advance!

Xavier

2

This is an OpenNeuro dataset, you may have more success commenting directly on OpenNeuro, see: OpenNeuro

In the comment section there, I see this related issue: Update BIDS dataset for OMEGA tutorial · Issue #557 · brainstorm-tools/brainstorm3 · GitHub

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3

Ok, thanks Stefan !

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