Attentional impairments in deficit and nondeficit forms of schizophrenia.
Attentional impairments in deficit and nondeficit forms of schizophrenia.
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DOI：
10.1176/ajp.154.3.363
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发表时间：
1997-03
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影响因子：
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通讯作者：
Robert W. Buchanan;Milton E. Strauss;Alan Breier;Brian Kirkpatrick;William T. Carpenter
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文献类型：
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作者：
Robert W. Buchanan;Milton E. Strauss;Alan Breier;Brian Kirkpatrick;William T. Carpenter
目的 先前对精神分裂症注意力/信息处理障碍的研究表明，缺陷综合征患者的特征应该是视觉信息处理测量的表现受损。因此，作者检查了视觉信息处理的两种测量方法，即连续表现测试的降级刺激版本和恐惧任务的强制选择范围，是否与缺陷综合症独特相关。方法 对 20 名精神分裂症患者和 56 名正常患者以及 27 名正常对照组受试者进行连续表现测试和忧虑跨度测试。结果 在连续表现测试和忧虑任务跨度方面，缺陷患者的表现明显低于非缺陷患者和正常对照组。在连续表现测试中，非缺陷患者与正常组之间没有显着差异，但非缺陷患者在忧虑任务跨度上的表现明显低于正常组。缺陷和非缺陷患者在连续表现测试和忧虑任务跨度方面的表现差异与简明精神病评定量表因子1或思想、语言和沟通量表的总分或精神安定药水平无关。结论 结果表明，缺陷患者的独特特征是连续性能测试中的性能受损。缺陷患者在连续性能测试中的差异表现可能与无法激活和分配注意力或视觉信息感知组织的损害有关。
OBJECTIVE Previous studies of attention/information processing impairments in schizophrenia suggest that patients with the deficit syndrome should be characterized by impaired performance on measures of visual information processing. Therefore, the authors examined whether two measures of visual information processing, a degraded stimulus version of the continuous performance test and a forced choice span of apprehension task, were uniquely related to the deficit syndrome. METHOD Performance on the continuous performance test and span of apprehension task was examined in 20 deficit and 56 nondeficit patients with schizophrenia and in 27 subjects in a normal comparison group. RESULTS Deficit patients performed significantly less well than both nondeficit patients and the normal comparison group on the continuous performance test and span of apprehension task. There were no significant differences between the nondeficit patients and the normal group on the continuous performance test, but nondeficit patients performed significantly less well on the span of apprehension task than the normal group. Differences between the deficit and nondeficit patients in performance on the continuous performance test and span of apprehension task were not related to total scores on the Brief Psychiatric Rating Scale factor 1 or on the Thought, Language, and Communication scale or to neuroleptic level. CONCLUSIONS The results suggest that deficit patients are uniquely characterized by impaired performance on the continuous performance test. The deficit patients' differential performance on the continuous performance test may be related to either an inability to activate and allocate attention or an impairment in the perceptual organization of visual information.