INITIAL-STAGES OF VISUAL INFORMATION-PROCESSING IN DYSLEXIA
INITIAL-STAGES OF VISUAL INFORMATION-PROCESSING IN DYSLEXIA
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DOI：
10.1037/0096-1523.9.6.923
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发表时间：
1983-01-01
影响因子：
2.1
通讯作者：
MCINTYRE, JS
中科院分区：
文献类型：
--
作者：
DILOLLO, V;HANSON, D;MCINTYRE, JS
采用四项实验任务来探讨10名8-14岁失读症男孩（采用广域成就测试口语阅读和拼写分量表和都市成就测试阅读理解分量表进行评估）和10名年龄、性别和智商匹配的正常对照的视觉信息加工的初始阶段。两个任务涉及视觉向后掩蔽；另外两个是时间整合任务。后向掩蔽任务显示，失读症患者的视觉信息处理速度较慢；在时间整合任务中，有证据表明失读症患者的持续时间更长。这种效应在连续刺激冲击同一视网膜位置的情况下最为明显。注意到这些影响发展的一些年龄趋势。这表明阅读困难的视觉系统可能需要很长一段时间才能从诱导刺激引起的神经活动的后遗症中恢复过来。（44 ref）（PsycINFO Database Record (c) 2017 APA，版权所有）
Four experimental tasks were employed to explore the initial stages of visual information processing in 10 8–14 yr old dyslexic boys (assessed by the Wide Range Achievement Test Oral Reading and Spelling subscales and the Metropolitan Achievement Test Reading Comprehension subscale) and 10 age-, sex-, and IQ-matched normal controls. Two tasks involved visual backward masking; the other 2 were temporal integration tasks. The backward-masking tasks yielded evidence of slower rates of visual information processing in dyslexics; the temporal-integration tasks yielded evidence of longer duration of visible persistence in dyslexics. This effect was most evident in situations in which sequential stimuli impinged on the same retinal location. Some age trends in the development of these effects are noted. It is suggested that the dyslexic visual system may take an unusually long period of time to recover from the aftereffects of neural activity evoked by an inducing stimulus.(44 ref)(PsycINFO Database Record (c) 2017 APA, all rights reserved)