Special Reports

Any person who once “drew a blank” during an exam is familiar with the horrors of cognitive difficulties: that terrible moment is for most of us so rare that it remains a traumatic memory for years to come. Imagine those who suffer from protracted cognitive difficulties.

Subjective complaints of impaired concentration, memory, and attention are common in people with major depressive disorder (MDD), and research shows that a variety of structural brain abnormalities are associated with MDD.1 These findings have intensified the interest in quantitative assessment of cognitive and neuropsychological performance in patients with mood disorders. Many studies that used standardized cognitive tests have found that mild cognitive abnormalities are associated with MDD and that these abnormalities are more pronounced in persons who have MDD with melancholic or psychotic features