Figure 3. Relationship between left amygdala neurofeedback training effect and individual characteristics in the experimental rtfMRI-nf group.

A) Correlation with length of the current major depressive episode. The training effect for the left amygdala (the average Happy – Rest percent signal change over the three training runs) was inversely correlated with the length of participants' current depressive episode. B) Correlation with difficulty describing feelings (TAS-20). The more difficulty a participant had describing their own feelings, the less average BOLD activation for the Happy-Rest contrast was observed in the left amygdala for the three training runs.