Baghdadi Golnaz, Towhidkhah Farzad, Rostami Reza, Raza Mohsen
Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran.
Department of Psychology, School of Psychology and Education, University of Tehran, Tehran, Iran.
Basic Clin Neurosci. 2017 Mar-Apr;8(2):155-165. doi: 10.18869/nirp.bcn.8.2.155.
In this study, we investigated the distraction power of the unusual and usual images on the attention of 20 healthy primary school children.
Our study was different from previous ones in that the participants were asked to fix the initial position of their attention on a predefined location after being presented with unusual images as distractors. The goals were presented in locations, which were far from the attraction basin of distractors. We expected that the pre-orienting of the attention to the position of targets would reduce the attractive effect of unusual images compared to the usual ones. The percentage of correct responses and the reaction time were measured as behavioral indicators of attention performance.
Results showed that using the goal-directed attention, subjects ignored both kinds of distractors nearly the same way.
With regard to previous reports about more attraction towards the unusual images, it is suggested that the dynamics of the visual attention system be sensitive to the initial condition. That is, changing the initial position of the attention can lead to the decrement of the unusual images effects. However, several other possibilities such as a probable delay in processing unusual features could explain this observation, too.
在本研究中，我们调查了异常图像和普通图像对20名健康小学生注意力的干扰能力。
我们的研究与以往研究的不同之处在于，在向参与者呈现异常图像作为干扰物后，要求他们将注意力的初始位置固定在预定义的位置上。目标呈现的位置远离干扰物的吸引范围。我们预期，与普通图像相比，将注意力预先定向到目标位置会降低异常图像的吸引力。测量正确反应的百分比和反应时间作为注意力表现的行为指标。
结果表明，通过目标导向注意力，受试者以几乎相同的方式忽略了两种干扰物。
关于先前报道的对异常图像有更大吸引力的情况，有人认为视觉注意力系统的动态对初始条件敏感。也就是说，改变注意力的初始位置会导致异常图像效果的减弱。然而，其他几种可能性，如处理异常特征可能存在的延迟，也可以解释这一观察结果。
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