Finding the balance between capture and control: Oculomotor selection in early deaf adults
Finding the balance between capture and control: Oculomotor selection in early deaf adults
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DOI：
10.1016/j.bandc.2015.03.001
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发表时间：
2015-06-01
影响因子：
2.5
通讯作者：
Pavani, Francesco
中科院分区：
文献类型：
--
作者：
Heimler, Benedetta;van Zoest, Wieske;Pavani, Francesco
以前研究双侧耳聋对注意选择的影响的工作表明，这一群体中经验相关的变化可能导致对刺激驱动的视觉信息(例如，突显)的自动处理增加。然而，适应性行为也需要观察者对与手头任务相关的目标驱动的信息进行优先排序。为了调查听觉剥夺是否改变了注意选择的这两个组成部分之间的平衡，我们评估了聋人的外显视觉选择的时间进程。20名早期失聪的成年人和20名听力控制者进行了动眼运动附加单生子实验。参与者将眼球快速移动到一个独特的定向目标，嵌入在同质的非目标和另外一个比目标更突出、同等或更不显著的独特定向分心物中。显着性是通过颜色来操纵的。对聋人参与者的手语熟练程度进行了评估。总体而言，结果表明，快速启动的眼跳是由显著驱动的，而较晚启动的眼跳是由目标驱动的。然而，聋人参与者在启动眼跳时总体上比听力控制者慢，也较少被与任务无关的显著分心因素捕获。失聪成人的迟缓眼球运动行为不能用所获得的任何语言测量来解释。重要的是，应用于数据的多项式模型揭示了两组之间潜在的显着性和目标驱动过程随时间的类似演变，证实了眼跳潜伏期在决定视觉选择结果中的关键作用。本研究结果表明，突显驱动信息的优先排序在耳聋患者中并非不可避免的现象。文中还讨论了可能与记录的行为效应相关的神经因素。(C)2015 Elsevier Inc.保留所有权利。
Previous work investigating the consequence of bilateral deafness on attentional selection suggests that experience-dependent changes in this population may result in increased automatic processing of stimulus-driven visual information (e.g., saliency). However, adaptive behavior also requires observers to prioritize goal-driven information relevant to the task at hand. In order to investigate whether auditory deprivation alters the balance between these two components of attentional selection, we assessed the time-course of overt visual selection in deaf adults. Twenty early-deaf adults and twenty hearing controls performed an oculomotor additional singleton paradigm. Participants made a speeded eye-movement to a unique orientation target, embedded among homogenous non-targets and one additional unique orientation distractor that was more, equally or less salient than the target. Saliency was manipulated through color. For deaf participants proficiency in sign language was assessed. Overall, results showed that fast initiated saccades were saliency-driven, whereas later initiated saccades were goal-driven. However, deaf participants were overall slower than hearing controls at initiating saccades and also less captured by task-irrelevant salient distractors. The delayed oculomotor behavior of deaf adults was not explained by any of the linguistic measures acquired. Importantly, a multinomial model applied to the data revealed a comparable evolution over time of the underlying saliency- and goal-driven processes between the two groups, confirming the crucial role of saccadic latencies in determining the outcome of visual selection performance. The present findings indicate that prioritization of saliency-driven information is not an unavoidable phenomenon in deafness. Possible neural correlates of the documented behavioral effect are also discussed. (C) 2015 Elsevier Inc. All rights reserved.