Visual information processing deficits in schizophrenic patients

精神分裂症患者的视觉信息处理缺陷

• 批准号: 12832037
• 负责人: TANAKA Goro
• 金额: $ 1.22万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12832037/
• 关键词: schizophrenia; visual search task

Using a visual search task, the present study investigated preattentive and focal attentional processes in schizophrenic patients. The performance of schizophrenic patients and normal subjects was compared in two search : feature search and conjunction search. In the feature search, the schizophrenic subjects showed nearly zero slopes of reaction time function as did the normal subjects, indicating that in the preattentive process the schizophrenic patients functioned at a normal level. In the conjunction search, the schizophrenic subjects showed steeper slopes than the normal subjects for target absence, suggesting that there was a deficit in the focal attentional process. The present study demonstrates the utility of the visual search task to investigate visual information processing deficits in schizophrenic patients.

采用视觉搜索任务，本研究探讨了精神分裂症患者的前注意和焦点注意过程。比较了精神分裂症患者和正常人在特征搜索和连接搜索两种搜索中的表现。在特征搜索中，精神分裂症患者的反应时函数的斜率几乎为零，这表明在前注意过程中，精神分裂症患者的功能处于正常水平。在联合搜索中，精神分裂症患者的目标缺失斜率比正常人更陡，这表明焦点注意过程存在缺陷。本研究证明了视觉搜索任务的实用性，以调查精神分裂症患者的视觉信息处理缺陷。