Fig. 3: Correlation between tract density measures from Schaefer-Yeo 400- and 1000-node atlases. | Communications Biology

Fig. 3: Correlation between tract density measures from Schaefer-Yeo 400- and 1000-node atlases.

From: Network-specific corpus callosum aging and age-moderated cognitive associations using tract-to-region analysis

Fig. 3

Scatter plot illustrates the strong positive relationship between harmonized tract density values derived from the Schaefer-400 atlas (x-axis) and the Schaefer-1000 atlas (y-axis) across all participants and networks (N = 5026 data points: 718 subjects × 7 networks). Each point represents a single subject-network measurement. The red dashed line represents the identity line (y = x). The near-perfect correlation (Pearson’s r = 0.972, R² = 0.945, p < 0.001) and tight clustering along the unity line demonstrate that tract density estimates are highly consistent across parcellation resolutions, confirming the robustness and reliability of the tract-to-region metric independent of atlas granularity.

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