Research Letter: Reproducibility and predictive value of the post-imperative negative variation during aversive instrumental learning in depression.

A letter about a study which investigated whether differences in frontal post-imperative negative variation (PINV) magnitudes between depressed patients and controls as identified at baseline (T1) during various levels of controllability can be reproduced in a follow-up assessment taking place six months after baseline (T2). It outlines the depression scores of the depressed group at T1 and at T2. It relates the enhanced mid-frontal PINV magnitude in depressed individuals during restitution of control.