Risk of depression enhances auditory pitch discrimination in the brain as indexed by the Mismatch Negativity

Depression is a state of aversion to activity and low mood that affects behaviour, thoughts, feelings and individual sense of well-being (Schnaas, 2003). A depressed mood is characterized by anxiety, sadness, anger and empty, hopeless, guilty, restless feelings (Rottenberg, 2005). If depressed mood occurs frequently, becoming a stable pathological state, it can lead to major depressive disorder (MDD). Moreover, differently from a non pathological sad state, depressed mood is characterized by the intensity and pervasiveness of the pain during patients activities, causing social and emotional limitations in their lives (Gotlib and Hammen, 2009).

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