Altered spatial distribution of visual attention in near and far space after early deafness
Altered spatial distribution of visual attention in near and far space after early deafness
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早期耳聋后近远空间视觉注意力的空间分布发生改变
DOI：
10.1016/j.neuropsychologia.2010.05.016
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发表时间：
2010-07-01
期刊：
影响因子：
2.6
通讯作者：
Mo, Lei
中科院分区：
文献类型：
--
作者：
Chen, Qi;He, Guihua;Mo, Lei
早期耳聋导致更多的注意力资源重新分配到附近空间的视觉外围，特别是在选择性注意的条件下，可能是为了补偿对来自当前注意焦点之外的潜在危险刺激的听觉警觉性的丧失。然而，关于注意力在远处空间的空间分布是否也会因早期耳聋而改变，目前还知之甚少。在目前的研究中，我们调查了与听力对照组相比，早期耳聋是否以及如何改变了远空间视觉空间注意力的分布。我们要求聋人和听力控制人员在近空间或远空间使用外周或中央干扰物执行侧翼任务。相容效应的大小被用来评估外周和中央分心物体接收到的注意资源量。在近空间条件下，周边干扰物对聋人产生的相容效应显著大于听力对照个体，而中央干扰物对听力对照个体产生的相容效应显著大于聋人。另一方面，在远空间，虽然外周干扰物在聋人和听力正常人群中产生了同等大小的相容效应，但中央干扰物只在聋人个体中产生了显著的相容效应，而在听力控制组中则没有。我们的结果表明，早期耳聋导致视觉空间注意力的重新分配，不仅在近空间，而且在远空间，近空间的外围注意增强，远空间的中央注意增强。(C)2010爱思唯尔有限公司。保留所有权利。
Early deafness results in a redistribution of more attentional resources to the visual periphery in near space, specifically under conditions of selective attention, probably to compensate for the loss of auditory alertness to potentially dangerous stimuli from outside the current attentional focus. It remains poorly understood, however, whether spatial distribution of attention in far space is altered by early deafness as well. In the present study, we investigated whether and how early deafness alters the distribution of visuospatial attention in far space, compared to hearing controls. We asked deaf individuals and hearing controls to perform a flanker task with either peripheral or central distractors, either in near or far space. Sizes of compatibility effect were used to assess the amount of attentional resources received by the peripheral and central distractors. In near space, peripheral distractors induced significantly larger compatibility effect in deaf individuals than in hearing controls while central distractors induced significantly larger compatibility effect in hearing controls than in deaf individuals. On the other hand in far space, although peripheral distractors induced equivalent sizes of compatibility effect in the deaf and hearing groups, central distractors caused significant compatibility effect only in deaf individuals, but not in hearing controls. Our results suggest that early deafness results in a redistribution of visuospatial attention not only in near space but also in far space, with enhanced peripheral attention in near space and enhanced central attention in far space. (C) 2010 Elsevier Ltd. All rights reserved.