Cognitive impairment is a core feature of bipolar disorder (BD) and major depressive disorder (MDD). Deficits in processing speed (PS) and sustained attention (SA) may be particularly impaired and may underpin a broader profile of deficits, however current knowledge of the nature of these impairments is limited by heterogeneous results in the literature. Few reviews to date have attempted to disentangle sources of heterogeneity to assess the presence and magnitude of impairments in PS and SA in BD and MDD.

中文翻译：

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双相情感障碍和重度抑郁症的处理速度和持续注意力：系统评价和荟萃分析

认知障碍是双相情感障碍（BD）和重度抑郁症（MDD）的核心特征。处理速度（PS）和持续注意力（SA）方面的缺陷可能会受到特别严重的损害，并可能导致更广泛的缺陷，但目前对这些损害性质的了解受到文献中不​​同结果的限制。迄今为止，很少有评论试图理清异质性来源，以评估 BD 和 MDD 中 PS 和 SA 损伤的存在和程度。