MRI
Modeling an auditory stimulated brain under altered states of consciousness using the generalized ising model

OpenNeuro Accession Number: ds003171Files: 531Size: 4.5GB

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Modeling an auditory stimulated brain under altered states of consciousness using the generalized ising model
Modeling an auditory stimulated brain under altered states of consciousness using the generalized ising model
  •   CHANGES
  •   dataset_description.json
  •   participants.tsv
  •   README
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README

17 healthy adults scanned on a 3T Siemens scanner. Participants completed auditory task (passive listening to a clip from the movie "Taken") and rest conditions at 4 levels of sedation: Awake, Light, Deep, Recovery.

Stimulus during task conditions was continuous. The audio clip was begun 10 seconds into the scan, however the five dummy volumes (TR=2s) at the beginning have already been removed, so the stimulus onset in the nifti file lines up with the first volume.

Comments

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By tim_lawn@hotmail.com - about 1 year ago
Thanks for making this dataset available! Unfortunately there seems to be something strange going on with some of the T1 images with compression in the X plane (eg: 19AK). Both the saggital and coronal views look compressed i n the X axis and this makes registration impossible. Would it be possible to get any advice on whether there is a way to fix this in the header or potentially for the T1's to be reuploaded?
By enicho4@uwo.ca - about 1 year ago
Hi there, I'll look into this issue and re-upload the T1s!
By tim_lawn@hotmail.com - about 1 year ago
Thank you very much! Feel free to reach out by email if you want any more details of the issues I found - timothy.lawn@kcl.ac.uk.
By enicho4@uwo.ca - about 1 year ago
Hi Tim, things should be fixed now!
By gregcooper95@gmail.com - 5 months ago
Hi! Thanks so much for uploading this dataset!

I'm just running through our preprocessing pipeline now. I've noticed that slice order isn't specified in the header, although acquisition timings are, and these appear to have been collected in descending order. Is this correct?

Also manually checked acquisition timings of slices in one of the functional scans and they appear to all have been normalised within each volume. I was wondering - have you already run a slice-timing interpolation step on the functional sans? If not, please could you make the slice acquisition order available?

All the best,
Greg