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MRI Brain

AOMIC-PIOP1

Amsterdam Open MRI Collection, Population Imaging of Psychology 1 study

Brain MRI of healthy university students with psychometric scores, collected to study individual differences in brain structure and function. 216 people aged 18 to 26, each with structural, diffusion, resting-state and five task fMRI runs, in BIDS under CC0.

Overview

PIOP1 is one of three studies in the Amsterdam Open MRI Collection (AOMIC), a set of 3T brain MRI datasets from the University of Amsterdam meant for research on individual differences in brain structure and function. "PIOP" stands for Population Imaging of Psychology. The study combines multimodal MRI with demographics and psychometric scores of university students. It has been on OpenNeuro as ds002785 under a CC0 waiver since 2020 and is described in a 2021 Scientific Data paper together with its sister studies PIOP2 and ID1000.

Composition

The release holds 216 of 248 scanned students from the University of Amsterdam and the Amsterdam University of Applied Sciences, aged 18 to 26 (120 female, 89 male, 7 without sex or age). Every participant has a T1-weighted scan and at least one functional run, and 211 also have a diffusion scan. The functional part covers resting state and five tasks: face perception, gender-stroop, emotion matching, working memory and emotion anticipation. Respiratory and cardiac traces accompany most runs. The participants table lists BMI, handedness, education type, religiosity, Raven matrices score and NEO-FFI personality scores.

Acquisition

Data were collected between May 2015 and April 2016 on a single Philips 3T scanner (Achieva generation) with a 32-channel head coil. The resting-state and face runs used multiband acceleration with factor 3, the other runs sequential gradient-echo EPI. A phase-difference fieldmap was part of the protocol, but the release contains no fieldmap images. Anatomical scans were defaced with pydeface. The BIDS release ships derivatives from Fmriprep, Freesurfer, MRIQC, preprocessed diffusion data, voxel-based morphometry and physiology-based noise regressors.

Annotations

There are no manual image annotations. Derivatives include automated tissue segmentations and cortical parcellations from Freesurfer and Fmriprep.

Known limitations

  • Single site and scanner; the scanner was upgraded before PIOP2, and the authors report lower temporal SNR in PIOP1.
  • Only healthy students in a narrow age range, with no clinical groups.
  • Not every participant completed every functional task; per-run counts range from 203 to 210.
  • Ages are rounded to the nearest quarter year for privacy.

Cohort

Aggregate numbers from the sources below. Bars are relative to the 216 subjects.

Contrast / sequence

Groups can overlap

  • T1-weighted 216 100%
  • BOLD fMRI 216 100%
  • Diffusion-weighted 211 98%

From BIDS file tree of ds002785 snapshot 2.0.0 (CC0), raw NIfTI files under sub-*/ counted per suffix

Age

mean 22.2 ± 1.8, median 22.3, range 18.3 to 26.3

0
50
100
150
182
10-1920-29

From participants.tsv of ds002785 snapshot 2.0.0 (CC0), counted per row; ages from age, sex from sex; Table 2 in Snoek et al. 2021, The Amsterdam Open MRI Collection, Scientific Data

Age by sex

Reported cross table. Missing cells were not published (fewer than 10 or not reported).

Female Male
  • 110
    20-29
    72
  • 10
    10-19
    17

From participants.tsv of ds002785 snapshot 2.0.0 (CC0), counted per row; ages from age, sex from sex

Contrast combinations

How many subjects have exactly each set of contrasts.

T1wdwiboldSubjects with exactly this set
211
5

From BIDS file tree of ds002785 snapshot 2.0.0 (CC0), raw NIfTI files under sub-*/ counted per suffix

License and access

Our reading of the license, not legal advice. Before you use the data, read the original license and confirm that your use is allowed. We take no responsibility for how you use a dataset. Full disclaimer

Access
Open download

Download without an account

Access page

Creative Commons Zero 1.0 Universal

Public domain dedication. Do anything with the data, including commercial use, without asking and without having to give credit.

dataset_description.json of snapshot 2.0.0 states "License" CC0.

Original license text Version read: 1.0 Checked 2026-10-07

What you can do

  • Yes
  • Yes
  • Yes
  • Yes
  • Yes

What you can share

  • Yes
  • Yes
  • Yes

What you must do

  • No
  • Share alike No
  • No
  • No
  • Manuscript review No
  • Release code No
  • Return results No
  • Delete after use No

Limits

  • No
  • Location limits No

Citation

Snoek L, van der Miesen MM, Beemsterboer T, van der Leij A, Eigenhuis A, Scholte HS. The Amsterdam Open MRI Collection, a set of multimodal MRI datasets for individual difference analyses. Scientific Data 8, 85 (2021). doi:10.1038/s41597-021-00870-6

Sources

Every number on this page comes from one of these documents. Each chart names the table or page it is taken from. The raw numbers are in stats.csv.