Research has demonstrated a role of negatively biased emotion processing in the development of depressive symptoms and has suggested that antidepressants work by targeting these negative biases. However, whilst these changes are well-documented, little is known about the effects of antidepressant withdrawal on emotion processing and mood. My PhD project aims are twofold, firstly to characterise mood and emotion processing changes associated with withdrawal over time to better understand the effects of antidepressant withdrawal and their time course. Secondly, to enable the identification of early markers of symptom and mood changes that might aid in predicting depressive relapse.