Phase 3: ICLabel classification and non-brain IC rejection

[neuromechanist]

Goal

Classify components with ICLabel and drop non-brain ICs.

Entrypoint

src/matlab/phase3_iclabel.m.

Steps

• Run iclabel on each Phase 2 checkpoint
• Drop non-brain ICs at threshold 0.69 (brain probability); justify vs 0.70/0.80 in research.md
• Save brain-only sets to derivatives/iclabel/sub-XXX_task-ThePresent_desc-braincomp_eeg.set
• Emit params.json and qa_iclabel.csv (brain-IC counts per subject, class distribution)
• Flag subjects with fewer than 5 brain ICs for manual review

Success Criteria

• Median brain-IC count >=15 per subject
• Flagged subjects logged; decision on inclusion recorded in research.md

Parent

Part of epic #1. Blocked by Phase 2.