Figure 9.

Cortical ripple oscillation frequency and duration versus myelination index. Neither cortical ripple oscillation frequency nor duration was significantly correlated with myelination index (Rosen and Halgren, 2021) during NREM or waking (linear mixed-effects models with patient as random effect, FDR-corrected p values, N = 273 channels from Patients S1-S17). Colors represent individual patients. Notably, higher myelination indices correspond to primary, whereas lower myelination indices correspond to associative cortical regions.