[Dataset] Add AOMIC-PIOP2 (ds002790) - Amsterdam Multimodal MRI (226 subjects)

Prerequisites

Complete AOMIC-PIOP1 first - PIOP2 uses the same pattern.

Dataset Info

Field	Value
Name	AOMIC-PIOP2 (Population Imaging of Psychology 2)
Source	OpenNeuro ds002790
Paper	Snoek et al., Scientific Data 2021
License	CC0 (Public Domain)
Subjects	226
Format	BIDS
HuggingFace Target	hugging-science/aomic-piop2

Description

AOMIC-PIOP2 is similar to PIOP1 but scanned on updated scanner hardware ("Achieva" vs "Intera"). Contains rich task-based fMRI with different experimental paradigms.

Data includes:

• T1-weighted structural MRI
• Diffusion-weighted MRI
• Resting-state fMRI
• Task-based fMRI (movie watching, different tasks than PIOP1)
• Physiological recordings

Why This Matters

1. Scanner upgrade validation - Test reproducibility across hardware
2. Different tasks - Complementary to PIOP1
3. Complete AOMIC - Third piece of the collection

Exact Schema

Same as PIOP1 - reuse get_aomic_piop1_features() pattern.

Files to Create

src/bids_hub/datasets/aomic_piop2.py       # Dataset module (copy PIOP1, adjust)
scripts/download_aomic_piop2.sh            # Download script
tests/test_aomic_piop2.py                  # Tests
docs/dataset-cards/aomic-piop2.md          # Dataset card (follow arc-aphasia-bids.md pattern)

Implementation Notes

• Nearly identical to PIOP1 implementation
• Can share validation code
• num_shards=226

Acceptance Criteria

• Download script works
• Validation passes
• Build succeeds
• Tests pass
• Dataset uploaded to hugging-science/aomic-piop2
• HuggingFace README.md with proper frontmatter, usage examples, and citation
• docs/dataset-cards/aomic-piop2.md added (follow arc-aphasia-bids.md pattern)

Resources

• OpenNeuro ds002790
• AOMIC Website

Citation

Same as PIOP1 - Snoek et al., 2021