Bouvet Lucie, Simard-Meilleur Andrée-Anne, Paignon Adeline, Mottron Laurent, Donnadieu Sophie
Laboratoire de Psychologie et Neurocognition (UMR CNRS 5105), Grenoble, France; Laboratoire de Neurosciences fonctionnelles et pathologies, UFR de psychologie, Université Lille3, Villeneuve d'Ascq, France.
Centre d'excellence en trouble envahissants du développement de l'université de Montréal (CETEDUM), Hôpital Rivière-des-Prairies et Département de Psychiatrie, Montréal, Canada.
Cognition. 2014 Jun;131(3):367-72. doi: 10.1016/j.cognition.2014.02.006. Epub 2014 Mar 15.
Processing local elements of hierarchical patterns at a superior level and independently from an intact global influence is a well-established characteristic of autistic visual perception. However, whether this confirmed finding has an equivalent in the auditory modality is still unknown. To fill this gap, 18 autistics and 18 typical participants completed a melodic decision task where global and local level information can be congruent or incongruent. While focusing either on the global (melody) or local level (group of notes) of hierarchical auditory stimuli, participants have to decide whether the focused level is rising or falling. Autistics showed intact global processing, a superior performance when processing local elements and a reduced global-to-local interference compared to typical participants. These results are the first to demonstrate that autistic processing of auditory hierarchical stimuli closely parallels processing of visual hierarchical stimuli. When analyzing complex auditory information, autistic participants present a local bias and a more autonomous local processing, but not to the detriment of global processing.
在较高级别处理层次模式的局部元素，且独立于完整的全局影响，这是自闭症视觉感知的一个既定特征。然而，这一已得到证实的发现是否在听觉模式中有类似情况仍不明确。为填补这一空白，18名自闭症患者和18名典型参与者完成了一项旋律判断任务，其中全局和局部层面的信息可以是一致的或不一致的。在关注分层听觉刺激的全局（旋律）或局部层面（音符组）时，参与者必须判断所关注的层面是上升还是下降。与典型参与者相比，自闭症患者表现出完整的全局处理能力，在处理局部元素时表现更优，且全局到局部的干扰减少。这些结果首次表明，自闭症患者对听觉分层刺激的处理与对视觉分层刺激的处理非常相似。在分析复杂的听觉信息时，自闭症参与者表现出局部偏向和更自主的局部处理，但这并不损害全局处理。
