"Both" means more than "two": localizing and counting in patients with visuospatial neglect.
"Both" means more than "two": localizing and counting in patients with visuospatial neglect.
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“两者”意味着不止“两个”：对视觉空间忽视患者进行定位和计数。
DOI：
10.1038/12150
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Rafal,R
中科院分区：
文献类型：
--
作者：
Vuilleumier,P;Rafal,R
我们报道，在顶叶损伤后半部分忽视的患者，视觉意识严重依赖于枚举或定位的不同注意需求。忽视患者通常不能注意到病变对侧半野的刺激（对侧），并且当同时出现病变同侧的竞争性刺激（同侧）时，即使主要视觉通路完好无损，并且检测到单独呈现的对侧刺激，也会“熄灭”它们。在这里，我们表明当患者在空间中枚举或定位刺激时，对侧消退不同。仅列举几个（≤4个）视觉元素可能利用独立于空间注意力的“主体化”机制（不像“计数”更多元素），就像正常人的情况一样1。
We report that in patients with hemispatial neglect after parietal damage, visual awareness critically depends on different attentional demands for enumeration or localization. Neglect patients usually fail to attend to stimuli in the hemifield contralateral to the lesion (contralesional) and'extinguish'them when simultaneously presented with competing stimuli ipsilateral to the lesion (ipsilesional), even though primary visual pathways are intact, and a contralesional stimulus presented alone is detected. Here we show that contralesional extinction differed when patients enumerated or located stimuli in space. Enumerating only a few (≤ 4) visual elements may exploit'subitizing'mechanisms independent from spatial attention (unlike'counting'of more elements), as is the case in normal people 1.