GCI scoring sheets and EEG summary dataset for CNC-fabricated Islamic ornamental panels

This dataset contains the Geometric Complexity Index (GCI) scoring sheet and the de-identified, group-level EEG summary statistics reported in the associated manuscript. Three CNC-fabricated Islamic ornament typologies (Radial, Spiral, Composite) were rated on five morphological parameters to compute a weighted GCI score, and were then shown to N = 35 adult participants while six EEG-derived neurocognitive indicators (Attention, Engagement, Relaxation, Excitement, Interest, Stress) were recorded. This dataset reports the aggregate (group-level) results underlying every table and figure in the manuscript.