Enhanced visual dominance in far space.
Enhanced visual dominance in far space.
复制标题
增强远空间的视觉优势
DOI：
10.1007/s00221-015-4353-2
复制
发表时间：
2015
影响因子：
2
通讯作者：
Chen Qi
中科院分区：
文献类型：
--
作者：
Yue Zhenzhu;Jiang Yizhou;Li You;Wang Pengfei;Chen Qi
科拉维塔效应是指当视觉刺激同时出现时，人们在大多数情况下对听觉刺激没有反应的现象。虽然Colavita效应仍然强大，不受许多因素的影响，但很少有人知道视觉优势如何随着感觉输入的深度而变化。在本研究中，视觉和听觉刺激呈现在相同的（在实验1）或在不同的空间距离（在实验2）。参与者被要求对单峰听觉、单峰视觉或双峰视听刺激做出快速反应。在不正确的反应双峰试验中，错误的试验中，只对视觉成分的反应进行了比较，在试验中，只对听觉成分的反应。在正确反应的双峰试验中，参与者首先对视觉成分做出反应的试验与参与者首先对听觉成分做出反应的试验进行了比较。对不正确和正确双峰试验的分析都表明了显著的视觉优势效应。更重要的是，视觉优势效应的大小显着增强，只要视觉刺激是在远空间，无论听觉刺激是在近或远空间。因此，我们的研究结果，第一次，揭示了视觉优势效应的变化沿着空间的深度维度。综上所述，本研究结果揭示了注意资源沿着空间深度维度的分配如何影响多感觉竞争过程。
The Colavita effect refers to the phenomenon that people do not respond to an auditory stimulus in most cases when a visual stimulus is simultaneously presented. Although the Colavita effect remains robust irrespective of many factors, little is known concerning how the visual dominance varies as a function of the depth of sensory inputs. In the present study, visual and auditory stimuli were presented either in the same (in Experiment 1) or in the different spatial distances (in Experiment 2). Participants were asked to make speeded responses to unimodal auditory, unimodal visual, or bimodal audiovisual stimuli. In the incorrectly responded bimodal trials, the error trials in which responses were made only to the visual component were compared with the trials in which responses were made only to the auditory component. In the correctly responded bimodal trials, the trials in which participants responded first to the visual component were compared with the trials in which participants responded first to the auditory component. Analysis on the incorrect and correct bimodal trials both indicated significant visual dominance effects. More importantly, the size of the visual dominance effect was significantly enhanced as long as the visual stimuli were presented in far space irrespective of whether the auditory stimuli were presented in near or far space. Our results thus, for the first time, revealed that the visual dominance effect changed along the depth dimension of space. Taken together, the present results shed lights on how the allocation of attentional resources along the depth dimension of space biases the process of multisensory competition.