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Sherlock_Merlin

OpenNeuro Accession Number: ds001110Files: 206Size: 9.05GB

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Sherlock_Merlin
Sherlock_Merlin
  •   CHANGES
  •   dataset_description.json
  •   README
  •   task-MerlinAudio_bold.json
  •   task-MerlinFreerecall_bold.json
  •   task-MerlinMovie_bold.json
  •   task-SherlockAudio_bold.json
  •   task-SherlockFreerecall_bold.json
  •   task-SherlockMovie_bold.json
  • stimuli
  • sub-01
  • sub-02
  • sub-03
  • sub-04
  • sub-05
  • sub-06
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README

This directory includes the data of 18 particpants who watched Sherlock movie and listened to the audio recording of Merlin movie. It also includes the data of 18 particpants who watched Merlin movie and listened to the audio recording of Sherlock movie. In addition there is the data of one particpants who watching both of these movies and recalling each of them in the scanner (two seperate days for the two movies). The audio recording of these sessions was used as stimuli that the lsiteners listened to in the scanner. Deskulled anatomical scan images are included for each subject.

The data needs to be cropped from the beginning and the end to be aligned and matches the onset of the stimuli.

Cropping info (in seconds, NOT including HRF delay):

viewers: Merlin Movie: start 25.5 end 1528 (matching stimulus file: Merlin.mp4) Sherlock Movie: start 25.5 end 1441 (matching stimulus file: Sherlock.m4v)

Note: the crop at the beginning includes an eye tracking set up and scanner delay. The cropped data will include all the movie data, including the cartoon intro. Depending on the research questions the movie can be time stamped and cropped further if needed)


listeners: Merlin Audio: start 3 end 915 (matching stimulus file: Merlin_Recall_For_Listener.wav) Sherlock Audio: start 3 end 1080 (matching stimulus file: Sherlock_Recall_For_Listener.wav)

Note: the crop at the beginning includes scanner delay. The cropped data will include all the audio data, including the intro music. Depending on the research questions the audio recording can be time stamped and cropped further if needed)


speaker: Merlin Movie: start 25.5 end 1528 (matching stimulus file: Merlin.mp4) Sherlock Movie: start 25.5 end 1441 (matching stimulus file: Sherlock.m4v)

Note: the crop at the beginning includes an eye-tracking set up and scanner delay. The cropped data will include all the movie data, including the cartoon intro. Depending on the research questions the movie can be time stamped and cropped further if needed)

Merlin Recall: start 3 end 906 (matching stimulus file: freerecall_merlin.wav) Sherlock Recall: start 3 end 1062 (matching stimulus file: freerecall_sherlock.wav)

Note: the crop at the beginning includes scanner delay. The audio file should be used to do accurate time stamping to find the start time of the speech. This is not included in the crop info provided above.

In general, time stamping should be done separately depending on the research question and is not included in crop info.

For more info about the methods please refer to https://academic.oup.com/cercor/article/doi/10.1093/cercor/bhx202/4080827/How-We-Transmit-Memories-to-Other-Brains

Comments

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By aleph4@gmail.com - over 3 years ago
Just FYI the anatomicals on this dataset are already skulled stripped, so fmriprep will currently not preprocess this correctly
By dipanjansletterbox@gmail.com - over 3 years ago
Thank you for the information. However, I am planning to do preprocessing in SPM. Will skull stripping affect it?
By dipanjansletterbox@gmail.com - over 3 years ago
I have some confusions regarding cropping. In Merlin Recall the instruction is to start at 3 and end at 906 seconds, i.e., in total 904 seconds of scan. However, there is 600 functional scans. Considering TR to be 1.5 sec that is 900 seconds of scan. Perhaps, I am missing something. Could you please explain. Similarly, in Sherlock recall there are 1186 scans. And we are instructed to crop to 3 - 1062 seconds. That is only 706 scans out of 1186 scans would be used. Am I correct?
By jsmentch@g.harvard.edu - about 2 years ago

By jsmentch@g.harvard.edu - about 2 years ago
For the MerlinMovie stimulus, the corresponding functional images from different subjects range from 1026 to 1041 1.5s TRs in length. (difference of 22.5 seconds)

Does anyone know what could account for this or where I might find more info to align these? I'm assuming the movie starts 25.5 seconds in and there is just some extra left over at the end for some particiapnts? It says here that the data is cropped and that to me suggests they should all have the same length or at least be closer than this.
By jsmentch@g.harvard.edu - almost 2 years ago
FYI, it appears that the slice timing information is given in milliseconds, not seconds.
By hadiaakram49@gmail.com - about 1 month ago
I have some confusions regarding preprocessing of datasets. Are the given datasets preprocessed or should we perform preprocessing and reorientation before any analysis?
can someone please let me know? so I can proceed my analysis?