Flexible integration of visual cues in adolescents with autism spectrum disorder.
Flexible integration of visual cues in adolescents with autism spectrum disorder.
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DOI：
10.1002/aur.1509
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发表时间：
2016-02
期刊：
影响因子：
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通讯作者：
Nardini M
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文献类型：
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作者：
Bedford R;Pellicano E;Mareschal D;Nardini M
虽然自闭症谱系障碍（ASD）的儿童表现出非典型的感觉处理，多感官信息整合受损的证据已经混合。在这项研究中，我们采取了贝叶斯模型为基础的方法来评估模态内整合一致和不一致的纹理和差异线索判断倾斜在典型和自闭症青少年。人类成年人最佳地联合收割机多种来源的感官信息，以减少知觉的变化，但在典型的发展，这种能力，整合线索不会发展，直到童年后期。虽然成年人不能帮助，但整合线索，即使他们是不一致的，幼儿的能力，保持线索分开给他们一个优势，在辨别不一致的刺激。考虑到成熟的线索整合出现在童年后期，我们假设典型的青少年会表现出类似成人的整合，结合一致和不一致的线索。对于ASD组，有三种可能的预测：（1）“不融合”：没有整合一致或不一致的线索，就像6岁的典型儿童一样;（2）“强制性融合”：整合一致和不一致的线索，就像典型的成年人一样;（3）“选择性融合”：当一致但不一致时，线索被组合，与增强知觉功能（EPF）理论的预测一致。正如假设，典型的青少年表现出显着的整合一致和不一致的线索。ASD组的结果与“选择性融合”一致，整合一致但不一致的线索。这使得患有ASD的青少年能够做出典型青少年无法做出的感性判断。与EPF一致，结果表明ASD的感知可能更灵活，更少受到强制性自上而下反馈的影响。Autism Res 2016，9：272-281.© 2015年国际自闭症研究学会，威利期刊，公司。
Although children with autism spectrum disorder (ASD) show atypical sensory processing, evidence for impaired integration of multisensory information has been mixed. In this study, we took a Bayesian model‐based approach to assess within‐modality integration of congruent and incongruent texture and disparity cues to judge slant in typical and autistic adolescents. Human adults optimally combine multiple sources of sensory information to reduce perceptual variance but in typical development this ability to integrate cues does not develop until late childhood. While adults cannot help but integrate cues, even when they are incongruent, young children's ability to keep cues separate gives them an advantage in discriminating incongruent stimuli. Given that mature cue integration emerges in later childhood, we hypothesized that typical adolescents would show adult‐like integration, combining both congruent and incongruent cues. For the ASD group there were three possible predictions (1) “no fusion”: no integration of congruent or incongruent cues, like 6‐year‐old typical children; (2) “mandatory fusion”: integration of congruent and incongruent cues, like typical adults; (3) “selective fusion”: cues are combined when congruent but not incongruent, consistent with predictions of Enhanced Perceptual Functioning (EPF) theory. As hypothesized, typical adolescents showed significant integration of both congruent and incongruent cues. The ASD group showed results consistent with “selective fusion,” integrating congruent but not incongruent cues. This allowed adolescents with ASD to make perceptual judgments which typical adolescents could not. In line with EPF, results suggest that perception in ASD may be more flexible and less governed by mandatory top‐down feedback. Autism Res 2016, 9: 272–281. © 2015 International Society for Autism Research, Wiley Periodicals, Inc.