Fig. 4: Data-driven model selection reveals that the depth of a subset of tertiary sulci is associated with reasoning. | Nature Communications

Fig. 4: Data-driven model selection reveals that the depth of a subset of tertiary sulci is associated with reasoning.

From: Cognitive insights from tertiary sulci in prefrontal cortex

Fig. 4

a Results from the LASSO regression predicting Matrix reasoning score from sulcal depth in the Discovery sample (n = 28 participants). Top: Beta-coefficients for each right hemisphere sulcus at a range of shrinking parameter (alpha) values. Highlighted box indicates coefficients at the chosen alpha-level. Bottom: Cross-validated mean-squared error (MSECV) at each alpha-level. By convention69, we selected the α that minimized the MSECV (dotted line). b Inflated cortical surface from an example participant highlighting the three tertiary sulci (pmfs-iRH (10), pmfs-aRH (11), and pimfsRH (12)) implicated in reasoning performance. Source data are provided as a Source Data file.

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