Asymmetrical hemispheric control of visual-spatial attention in adults with attention deficit hyperactivity disorder
Asymmetrical hemispheric control of visual-spatial attention in adults with attention deficit hyperactivity disorder
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DOI：
10.1037/0894-4105.11.4.467
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发表时间：
1997-10-01
期刊：
影响因子：
2.4
通讯作者：
Swanson, JM
中科院分区：
文献类型：
--
作者：
Epstein, JN;Conners, CK;Swanson, JM
由于注意力的神经心理学机制被假设位于大脑的右半球，一些研究人员已经开始将注意力缺陷多动障碍（ADHD）相关的注意力缺陷概念化为涉及右半球异常。作者使用对信息处理效率的半球差异敏感的计时视觉-空间注意任务评估并比较了诊断为ADHD的成人患者与非ADHD患者组。在不同的提示条件下，线索目标延迟，和视野的反应时间进行了评估。当参与者的注意力被右视野中的线索误导，注意力不得不转向左视野中的目标时，ADHD成年人的延迟时间比非ADHD成年人长，特别是当提示和目标之间的间隔为800 ms时，与100 ms相比。这种特定的功能障碍模式被解释为难以保持注意力，可能与以下因素有关：右半球的前注意力机制。
As neuropsychological mechanisms for attention have been hypothesized to be located in the right hemisphere of the brain, several investigators have begun to conceptualize attention deficit hyperactivity disorder (ADHD)-related attentional deficits as involving right-hemispheric abnormalities. The authors evaluated and compared adult patients diagnosed with ADHD with a non-ADHD group of patients using a chronometric visual-spatial attention task that is sensitive to hemispheric differences in efficiency of information processing. Reaction times across different cuing conditions, cue-target delays, and visual fields were assessed. When participants' attention was misdirected with cues in the right visual field and attention had to be switched to a target on the left visual field, there was a longer delay among ADHD adults than non-ADHD adults, specifically when the interval between the cue and target was 800 ms as compared with 100 ms. This specific pattern of dysfunction was interpreted as a difficulty with maintaining attention possibly associated with anterior attention mechanisms in the right hemisphere.