Fig. 2.

Functional structure of DDTBOX. (a) The single subject data decoding functions accept epoched data and analysis configuration parameters. Epoched data is extracted for selected analysis time windows, and sorted for SVM classification or regression, for each cross-validation step and each independent analysis (full set of cross-validation steps). SVM classification/regression is performed in LIBSVM or LIBLINEAR. (b) Group-level statistical analysis functions accept single subject MVPA results and group analysis configuration parameters. Decoding performance and feature weights are aggregated over single subjects and are statistically tested at the group level. Multiple comparisons corrections are applied as specified by the user. After analyses, DDTBOX can plot the group decoding accuracy and feature weights results