自闭症与视觉噪声敏感性

2015-05-05 coo 生物360

一项研究发现,自闭症谱系障碍的某些知觉削弱可能与对感官噪声的敏感性增加有关,而非与感官整合的缺损有关。患自闭症的人们常常表现出在涉及对单个元素的感知的任务中取得的成绩高,而在需要全局感知的任务中取得的成绩低,这种现象常常被归结于缺少全局感觉整合。为了检验另外一种假说,即患自闭症的人对噪声感官信号具有高敏感度,Adam Zaidel及其同事向14位患自闭症的人提供了具有不同难度的一个视觉感知任务,在

一项研究发现,自闭症谱系障碍的某些知觉削弱可能与对感官噪声的敏感性增加有关,而非与感官整合的缺损有关。

患自闭症的人们常常表现出在涉及对单个元素的感知的任务中取得的成绩高,而在需要全局感知的任务中取得的成绩低,这种现象常常被归结于缺少全局感觉整合。为了检验另外一种假说,即患自闭症的人对噪声感官信号具有高敏感度,Adam Zaidel及其同事向14位患自闭症的人提供了具有不同难度的一个视觉感知任务,在这个测试中,视觉噪声的数量独立地变化。这组作者发现,在无噪声环境中的受试者表现出了对自我运动的感知没有被削弱,但是引入噪声会显著影响受试者的感知。此外,当视觉刺激与通过内耳前庭系统感受到的惯性运动配合起来的时候,患有自闭症的人们表现出了完整的多感觉运动整合,即便在噪声存在的情况下也是如此。

这组作者说,这些结果提示,患自闭症的人们可能遇到先备感觉知识的使用减少,这可能导致对即将到来的感觉刺激的依赖增加,以及对噪声的敏感性增加。

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    2017-09-28 蔡厌倦

    缺少全局感觉整合.学习

    0

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    2015-05-07 zywlvao
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    2015-05-07 xiongke014
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    2015-05-07 xinmeili
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    2015-05-05 huaxipanxing

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