Hauser Peter C, Dye Matthew W G, Boutla Mrim, Green C Shawn, Bavelier Daphne
Department of Research and Teacher Education, National Technical Institute of the Deaf, Rochester Institute of Technology, Rochester, NY 14623-5604, USA.
Brain Res. 2007 Jun 11;1153:178-87. doi: 10.1016/j.brainres.2007.03.065. Epub 2007 Mar 28.
Previous studies have demonstrated that early deafness causes enhancements in peripheral visual attention. Here, we ask if this cross-modal plasticity of visual attention is accompanied by an increase in the number of objects that can be grasped at once. In a first experiment using an enumeration task, Deaf adult native signers and hearing non-signers performed comparably, suggesting that deafness does not enhance the number of objects one can attend to simultaneously. In a second experiment using the Multiple Object Tracking task, Deaf adult native signers and hearing non-signers also performed comparably when required to monitor several, distinct, moving targets among moving distractors. The results of these experiments suggest that deafness does not significantly alter the ability to allocate attention to several objects at once. Thus, early deafness does not enhance all facets of visual attention, but rather its effects are quite specific.
先前的研究表明，早期失聪会增强周边视觉注意力。在此，我们探讨这种视觉注意力的跨模态可塑性是否伴随着一次能够抓取的物体数量的增加。在第一个使用枚举任务的实验中，成年先天性失聪的手语使用者和听力正常的非手语使用者表现相当，这表明失聪并不会增加一个人同时能够关注的物体数量。在第二个使用多目标跟踪任务的实验中，当需要在移动的干扰物中监测多个不同的移动目标时，成年先天性失聪的手语使用者和听力正常的非手语使用者表现也相当。这些实验结果表明，失聪不会显著改变一次将注意力分配到多个物体上的能力。因此，早期失聪并不会增强视觉注意力的所有方面，而是其影响相当具有特异性。
