Imaging of neural oscillations with embedded inferential and group prevalence statistics
Fig 10
Regularization methods for covariance estimates.
For illustration we show GEP results from the single-subject data of Fig 3a comparing gamma power between stimulus and baseline periods. The top panels display the power ratio finduced, the bottom panels display the power associated with each component, computed as in the baseline and stimulus period. In a) component-wise power computed from regularized and unregularized covariance matrices are compared using the diagonal loading method. In b), regularized results using the truncated SVD method, which results in a smaller number of components.