Hochman Eldad Yitzhak, Eviatar Zohar
Department of Psychology and the Institute of Information Processing and Decision Making, University of Haifa, Haifa, Israel.
Neuropsychology. 2006 Nov;20(6):666-74. doi: 10.1037/0894-4105.20.6.666.
This study tested the hypothesis that when tasks are complex, response selection and performance monitoring are divided across the hemispheres, and when tasks are simple, response selection and error monitoring are done in the same hemisphere. Using a divided visual field paradigm, the authors presented a target and an interference stimulus, either to the same visual field or to different visual fields, and encouraged error correction. The interference stimulus was timed to interfere with posited error processing. Four tasks were used: bar graph identification, lexical decision, and complex and simple versions of the flankers task. The first three tasks revealed a pattern of contralateral interference, suggesting that error processing occurred in the hemisphere that did not process the initial target. The fourth task showed ipsilateral interference, suggesting that the same hemisphere processed the target and monitored itself. The authors conclude that the pattern of hemispheric cooperation in error processing is affected by task complexity.
当任务复杂时，反应选择和绩效监测在两个半球之间进行分配；而当任务简单时，反应选择和错误监测在同一半球内完成。作者采用了视野分离范式，向同一视野或不同视野呈现一个目标刺激和一个干扰刺激，并鼓励进行错误纠正。干扰刺激的呈现时间经过设定，以干扰假定的错误处理过程。使用了四项任务：柱状图识别、词汇判断以及侧翼任务的复杂版本和简单版本。前三项任务呈现出对侧干扰模式，这表明错误处理发生在未处理初始目标的半球。第四项任务显示出同侧干扰，这表明同一半球对目标进行处理并对自身进行监测。作者得出结论，错误处理中的半球合作模式受任务复杂性的影响。
