Figure 2.

DCM model specification. We specified 256 models and grouped them into four families, depending on the location of the modulations of positive and negative valence. The modulations are depicted as red dots on the connections. In each family, all possible combinations of modulations were grouped together yielding one model with no modulation, 15 models with bottom-up modulations, 15 models with top-down modulations, and 225 models with bidirectional modulations. All faces were the driving input to the FFA.