Kurachi M, Matsui M, Kiba K, Suzuki M, Tsunoda M, Yamaguchi N
Department of Neuropsychiatry, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Japan.
Schizophr Res. 1994 Apr;12(1):75-80. doi: 10.1016/0920-9964(94)90086-8.
The Wechsler Adult Intelligence Scale was examined in 39 patients with schizophrenia, the visual cognitive task of Picture Completion showing the most impairment. In order to clarify the role of eye movements in Picture Completion, searching eye movements in 12 schizophrenic patients and 12 normal controls were recorded using an infrared eye-mark recorder. Schizophrenic patients as a group showed fewer eye fixations, and shorter total length of scan path than normal controls during the last 10 s of exposure to the picture. However, the patients who responded correctly, did so with a similar number of fixations and similar length of total scan path to those of normal controls. The patients who failed in the task took a significantly longer time for the first survey of the picture than the successful patients and normal controls. The less efficient strategy of visual search seen in the patients who failed might be a manifestation of poor reality testing and be related to frontal lobe dysfunction.
对39例精神分裂症患者进行了韦氏成人智力量表测试，其中图片完成这一视觉认知任务受损最为严重。为了阐明眼动在图片完成任务中的作用，使用红外眼动记录仪记录了12例精神分裂症患者和12例正常对照者的搜索眼动情况。在图片呈现的最后10秒内，作为一个整体的精神分裂症患者组的注视次数较少，扫描路径的总长度也比正常对照者短。然而，回答正确的患者其注视次数和扫描路径总长度与正常对照者相似。任务失败的患者对图片进行首次扫视所用的时间明显长于成功的患者和正常对照者。任务失败的患者中观察到的视觉搜索策略效率较低，可能是现实检验能力差的一种表现，并且与额叶功能障碍有关。
