Psychometrically matched visual-processing tasks in schizophrenia spectrum disorders
Psychometrically matched visual-processing tasks in schizophrenia spectrum disorders
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DOI：
10.1037/0021-843x.112.1.28
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发表时间：
2003-02-01
影响因子：
4.6
通讯作者：
O'Donnell, BF
中科院分区：
文献类型：
--
作者：
Brenner, CA;Wilt, MA;O'Donnell, BF
精神分裂症患者表现出视觉感知和工作记忆的缺陷，但这些缺陷之间的关系尚未被表征与心理测量匹配的任务。作者对43名精神分裂症患者和22名非精神科受试者进行了2项视觉辨别和6项再认任务的测试。当执行困难匹配的任务，频谱科目表现出更严重的障碍，运动相比，形式处理。当任务匹配的真实分数方差，频谱科目表现出更差的性能上的形式和运动的歧视，并在运动识别的差异赤字与短的显示持续时间和长的刺激间隔。这些结果提供了证据的差异赤字的视觉处理精神分裂症，似乎是依赖于任务的时间特性。
Patients with schizophrenia show deficits in visual perception and working memory, but the relationship between these deficits has not been characterized with psychometrically matched tasks. The authors administered 2 visual discrimination and 6 recognition tasks to 43 schizophrenia spectrum patients and 22 nonpsychiatric subjects. When performing difficulty-matched tasks, spectrum subjects showed more severe impairments for motion compared with form processing. When tasks were matched on true score variance, spectrum subjects exhibited worse performance on both form and motion discrimination, and a differential deficit in motion recognition with a short display duration and long interstimulus interval. These results provide evidence of differential deficits in visual processing in schizophrenia that appear to be dependent on the temporal characteristics of the tasks.