Visual-spatial attention in developmental dyslexia
Visual-spatial attention in developmental dyslexia
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DOI：
10.1016/s0010-9452(08)70840-2
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发表时间：
2000-02-01
期刊：
影响因子：
3.6
通讯作者：
Mascetti, GG
中科院分区：
文献类型：
--
作者：
Facoetti, A;Paganoni, P;Mascetti, GG
视觉注意的定向和聚焦是阅读过程中的两个重要环节。他们在一组有阅读障碍的儿童和正常的读者中进行了研究。采用内隐定向实验范式研究了由周边视觉线索和中枢视觉线索引起的注意转移。聚焦，即控制注意力焦点大小的能力，采用简单的中央视觉反应时间进行了研究。结果表明，诵读困难症有一个特定的残疾在转移的注意力所造成的外围线索在短SOA，也能够保持注意力集中的时间很短，大概是不够长的有效的视觉处理。我们的研究结果支持的建议，视觉选择性注意缺陷残疾读者可能是由于一个特定的困难，定向和聚焦。
Orienting and focusing of visual attention are two processes strictly involved in reading. They were studied in a group of dyslexic children and normal readers. Shifting of attention by both peripheral and central visual cues was studied by means of the covert orienting paradigm. Focusing, consisting in the ability to control the size of the attentional focus, was investigated using simple reaction times in central vision. Results showed that dyslexics had a specific disability in the shifting of attention caused by a peripheral cue at short SOAs, and were also able to maintain attention focused for short periods of time only, presumably not long enough for efficient visual processing. Our results support the suggestion that visual selective attention deficits in disabled readers may be due to a specific difficulty in orienting and focusing.