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題名 | Visual Spatial Attention in Children with Attention Deficit Hyperactivity Disorder=注意力欠缺過動兒之視覺空間注意力研究 |
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作 者 | 陳仲堯; 陳嘉玲; 吳菁宜; 陳協慶; 鄧復旦; 黃美涓; | 書刊名 | 長庚醫學 |
卷期 | 25:8 2002.08[民91.08] |
頁次 | 頁514-521 |
分類號 | 415.9517 |
關鍵詞 | 注意力欠缺過動兒; 小孩; 反應時間; 注意力; Attention deficit hyperactivity disorder; Children; Reaction time; Attention; |
語文 | 英文(English) |
中文摘要 | 背景:注意力欠缺過動兒的主要特徵之一是注意力不能集中。然而,對於過動兒之視覺空間注意力之缺損到目前為止仍無定論。本篇研究乃是利用Neuroscan這套系統來研究過動兒之視覺空間注意力(visual spatial attention),其中包括了大腦後側所負積換隱藏性注意力系統(covert shift of attention)及大腦前側所責負的特續性注意力系統(sustained attentional system)之研究。 方法:本實驗乃利用Neuroscan system,分成三種不同的條件共十二種情況:(1)提示的正確與否(分成正確,錯誤和沒有提示);(2)延遲(delay)(分成100 msec和800 msec延遲);(3)左右側9左側及右側),在每一種情況下分別測量其反應時間(reaction time, RT),實驗分成過動兒及正常小孩兩組。 結果:我們發現過動兒的平均反應時間(RT=760msec)比正常小孩(RT=650 msec)都比100 msec延遲情況(RT=730 msec)的還要快(p<0.001)。過動兒在100 msec延遲,錯誤提示的情況下,其右側視野的反應時間(RT=880 msec)比左側視野的反應時間(RT=830 msec)還要長(p=0.045),這在正常小孩並沒有發現。 結論:我們發現過動兒之隱藏性注意力及持續性注意力系統均較正常小孩差,而且過動兒之左側額葉所負負之注意力功能比起右側為差。 |
英文摘要 | Backgound: Attention deficit hyperactivity disorder (ADHD) was characterized by deficit in the attention mechanism. Until now, the visual-spatial attention deficit in children with ADHD remains controversial. We report a study of the visual spatial attention to assess covert shifts of attention and sustained attention theoretically linked to two neuroanatomically defined attentional system in the posterior and anterior parts of the human brain. Methods: Using the Neuroscan system, the reaction time (RT) was measured according to three different within-subject conditions including cueing (valid, invalid and neutral); delay (800 msec and 100 msec); side [right visual field (RVF) and left visual field (LVF)] as well as one between-subject condition (healthy, ADHD). Results: The AHDH group showed slower RTs overall (RT=760 msec) than the comparison group (RT=680 msec) were faster the delayed condition of 100 msec (RT=730 msec) in all children (p<0.001). the AHHD group showed significant lateral differences in RT (RTRVF: 880 msec>RTLVF: 830 msec) in the 100 msec delay for the invalid cueing condition (p=0.045) that was not found in the comparison group. Conclusion: General dysfunction including posterior-based covert shift of attention and asymmetric left parietal dysfunction in the disengaged operation was noted in those with ADHD. |
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