抑郁症患者视觉信息处理速度的评估
Evaluation of Visual Information Processing Speed in Depressed People.
作者信息
Khanahmadi Mohammad, Malmir Maryam, Eskandari Hosein, Orang Tahereh
机构信息
1. Dept. of Clinical Psychology, Allame Tabataba'ee University , Tehran, Iran.
2. Dept. of Exceptional Children Psychology, Science and Research Branch, Islamic Azad University , Tehran, Iran.
出版信息
Iran J Public Health. 2013 Nov;42(11):1266-73.
BACKGROUND
Depression disorders are associated with serious dysfunction and depressive symptoms. Cognitive slowing is a clear symptom observed in all depressed people. PVSAT is a measure of cognitive function that specifically assesses visual information processing speed and flexibility, as well as calculation ability. The aim of the present study was to determine whether the Paced Visual Serial Addition Test (PVSAT) might constitute a useful procedure for assessing cognitive functions in depressive disorder.
METHOD
Twenty - eight depressed patients, together with fourteen healthy control (HC) subjects participated in the study. All participants performed the PVSAT and a set of clinical tasks assessing information processing speed, working memory and executive functions.
RESULTS
Compared with the HCs, the depressed patients were significantly impaired in their performance of the PVSAT. Significant impairment (compared with controls) was also evidenced by only one of the clinical tasks - the symbol coding task, which assesses information processing speed.
CONCLUSION
Our results demonstrate the high sensitivity of the PVSAT to cognitive impairment. However, correlation analyses showed that the main factor explaining the depressed patients PVSAT impairment was cognitive slowing.
背景
抑郁症与严重的功能障碍和抑郁症状相关。认知迟缓是所有抑郁症患者都存在的明显症状。 paced视觉连续加法测试（PVSAT）是一种认知功能测量方法，专门评估视觉信息处理速度和灵活性以及计算能力。本研究的目的是确定 paced视觉连续加法测试（PVSAT）是否可能构成评估抑郁症认知功能的有用方法。
方法
28名抑郁症患者和14名健康对照（HC）受试者参与了该研究。所有参与者都进行了PVSAT以及一组评估信息处理速度、工作记忆和执行功能的临床任务。
结果
与健康对照相比，抑郁症患者在PVSAT测试中的表现明显受损。仅在一项评估信息处理速度的临床任务——符号编码任务中也证实了（与对照组相比）存在显著损害。
结论
我们的结果表明PVSAT对认知障碍具有高度敏感性。然而，相关分析表明，解释抑郁症患者PVSAT受损的主要因素是认知迟缓。
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