自闭症谱系障碍中的视觉搜索：指令性与自发性局部和整体加工

Visual Search in ASD: Instructed Versus Spontaneous Local and Global Processing.

作者信息

Van der Hallen Ruth, Evers Kris, Boets Bart, Steyaert Jean, Noens Ilse, Wagemans Johan

机构信息

Laboratory of Experimental Psychology, Department of Brain and Cognition, KU Leuven, 3000, Leuven, Belgium.

Child and Adolescent Psychiatry, Department of Neurosciences, UPC-KU Leuven, 3000, Leuven, Belgium.

出版信息

J Autism Dev Disord. 2016 Sep;46(9):3023-36. doi: 10.1007/s10803-016-2826-1.

DOI:10.1007/s10803-016-2826-1

PMID:27334873

Abstract

Visual search has been used extensively to investigate differences in mid-level visual processing between individuals with ASD and TD individuals. The current study employed two visual search paradigms with Gaborized stimuli to assess the impact of task distractors (Experiment 1) and task instruction (Experiment 2) on local-global visual processing in ASD versus TD children. Experiment 1 revealed both groups to be equally sensitive to the absence or presence of a distractor, regardless of the type of target or type of distractor. Experiment 2 revealed a differential effect of task instruction for ASD compared to TD, regardless of the type of target. Taken together, these results stress the importance of task factors in the study of local-global visual processing in ASD.

摘要

视觉搜索已被广泛用于研究自闭症谱系障碍（ASD）个体与典型发育（TD）个体在中级视觉处理方面的差异。本研究采用两种带有加柏尔纹理刺激的视觉搜索范式，以评估任务干扰物（实验1）和任务指令（实验2）对ASD儿童与TD儿童局部-整体视觉处理的影响。实验1表明，无论目标类型或干扰物类型如何，两组对干扰物的存在或不存在同样敏感。实验2表明，无论目标类型如何，与TD相比，任务指令对ASD有不同的影响。综合来看，这些结果强调了任务因素在ASD局部-整体视觉处理研究中的重要性。