Visuo-cognitive study for the promotion of understanding in children with mental retardation.

促进智力低下儿童理解的视觉认知研究。

• 批准号: 03680236
• 负责人: OZAKI Hisaki
• 金额: $ 0.96万
• 依托单位: IBARAKI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03680236/
• 关键词: Child With Mental Retardation; Eye Movement; Visual Cognition; Visual Function; Useful Visual Field; Figural Search; Visual Field; Peripheral Visual Acuity; 数概念; 大小弁別

(1) Purpose : Effective presentation of the visual information was examined to promote understanding in children with mental retardation by the evaluation of their eye movements during visual cognition.(2) Results : Main results are as follows;1)Developmental characteristics of visual fixation during figural searching. Prior to the evaluation of visuo-cognitive aspects in children with mental retardation, developmental characteristics during search of geometric figures were examined. Younger children frequently tended to fixate template figure. They also gazed figures longer in each fixation. Children older than eight years old succeeded to search target figure in effective strategie.2)Figural search in children with mental retardation. Children with mental retardation fixated each figure longer time. And they also fixated particular figures repetitively. These results suggest that children with mental retardation have a difficulty for searching particular pattern of figures.3)Evaluati … More on of visuo-cognitive aspects. Processes during visual searching were examined by superimposing the visual point on the real visual field screen. Counting and decision making process were estimable by tracing those time series of fixational process.4)Measurement of visual field Visual field was measured by computer-controled visual field measuring system. Most children with mental retardation showed visual field as same as that of normal spatial characteristics. However, restricted visual field was detected in four out of sixteen children with mental retardation.5)Measurement of peripheral visual function Spatial distribution of visual acuity in peripheral visual field was examined. Peripheral visual acuity in children with mental retardation were similar to those in normal visual function. However, children with mental retardation exhibited narrow useful visual field compared to those in normal visual function.(3)CONCLUSION : In most children with mental retardation, peripheral visual function worked in good shape. Their difficulty and restriction in visual cognition results from an information processing in much higher levels. However, children with mental retardation had lower peripheral visual functionings. Special care and treatment in a visual presentation will be needed for those lowered visual functions. Less

(1)目的：通过对智力落后儿童视觉认知过程中眼动的评价，探讨视觉信息的有效呈现对促进理解的作用。(2)结果：主要结果如下：1）图形搜索过程中视觉注视的发展特点。在此之前的视觉认知方面的评估与智力低下的儿童，在搜索几何图形的发展特点进行了检查。年龄较小的儿童往往倾向于固定模板图。在每次注视中，他们注视人物的时间也更长。8岁以上儿童在有效策略下成功地搜索到目标图形。2）智力落后儿童图形搜索。弱智儿童注视每个图形的时间较长。他们也会重复地注视特定的数字。这些结果表明，智力落后儿童对特定图形的搜索存在困难。 ...更多信息 在视觉认知方面。通过将视觉点叠加在真实的视野屏幕上来检查视觉搜索过程。通过追踪注视过程的时间序列，可以估计计算和决策过程。4）视野测量采用计算机控制的视野测量系统测量视野。精神发育迟滞儿童的视野大多与正常空间特征儿童的视野相同。5）周边视功能的测定检测周边视野内视敏度的空间分布。精神发育迟滞儿童的周边视力与视功能正常儿童相近。然而，智力低下的儿童表现出狭窄的有用视野相比，正常的视觉功能。（3）结论：精神发育迟滞儿童周边视功能正常。他们视觉认知的困难和局限性是由于他们对信息的加工处于更高的层次。而智力低下儿童的周边视功能较低。对于那些视觉功能降低的患者，需要在视觉呈现中进行特殊护理和治疗。少

项目成果

MIYO OOMORI: "DEVELOPMENTAL CHARACTERISTICS OF VISUAL FIXATION DURING FIGURAL SEARCHING" Japanese Journal of Educational Psychology. 40-4. p.394-401 (1992)

MIYO OOMORI：“人物搜索过程中视觉固定的发展特征”日本教育心理学杂志。

大森 美代: "幾何学図形探索における視線移動の発達的変化" 教育心理学研究. 40. 394-401 (1992)

Miyo Omori：“探索几何形状期间凝视运动的发展变化”教育心理学研究 40. 394-401 (1992)。