视觉注意影响长度知觉

发布时间：2018-09-10 16:07

【摘要】：关于视觉注意能否以及如何改变线长知觉的争论由来已久。研究者们分别用不同的实验范式得出了视觉注意增加、减弱和不影响线段的主观长度三种结论。然而,由于每种实验范式都遭到诸如未能有效引发视觉注意或引发视觉注意不纯等质疑,因此究竟哪种观点更为正确目前尚无定论。此外,多数研究都只用单一的实验范式展开,因此所得结论是确由注意引起还是受具体范式影响备受质疑。针对以上问题,我们在本研究中用了两种不同的注意范式分别对视觉注意如何影响长度知觉这一问题进行了探索。研究包括两部分研究共四个实验。其中,研究一中,我们用双侧点阵运动范式调节视觉注意,让被试判断呈现于双侧视野的线段长度,最后得出了注意增加线段的主观长度的结论。研究二中,我们采用棱镜适应范式调节空间注意向左偏转、向右偏转和不偏转,运用前测后测设计,通过比较被试前后测的线长判断任务的绩效差异,也证明了视觉注意能增加线段的主观长度。我们用不同的注意范式一致地证明了视觉注意能够增加线段的主观长度这一结论,这排除了我们的结果是由具体实验范式引起的这一可能性,使结论更具可推广性。同时,我们的注意范式相比以往的注意范式更为纯净,因而由之得出的结论更可靠。总之,我们的研究在不同的注意范式下证明了注意能够增加线段的主观长度,这同时也说明了注意能够改变知觉外观。
[Abstract]:There has been a long debate about whether and how visual attention can change line length perception. Using different experimental paradigms, the researchers concluded that visual attention increases, weakens and does not affect the subjective length of line segments. However, since each experimental paradigm has been questioned, such as not attracting visual attention effectively or causing visual attention to be impure, there is no final conclusion as to which viewpoint is more correct. In addition, most of the studies are carried out with a single experimental paradigm, so whether the conclusion is really caused by attention or influenced by specific paradigm is questioned. In order to solve the above problems, we use two different attention paradigms to explore how visual attention affects length perception. The research consists of two parts and four experiments. In the first study, we use the bilateral lattice motion paradigm to adjust visual attention, let the subjects judge the length of the line segment presented in the bilateral visual field, and finally draw the conclusion that attention increases the subjective length of the line segment. In the second study, we adopted the prism adaptation paradigm to adjust the spatial attention deflection to the left, to the right and to the right, and used the pre-test and post-test design to compare the performance differences of the measured line length before and after the subjects. It is also proved that visual attention can increase the subjective length of line segments. We have consistently proved that visual attention can increase the subjective length of line segments by using different attention paradigms, which excludes the possibility that our results are caused by specific experimental paradigms and makes the conclusions more extensible. At the same time, our attention paradigm is purer than the previous one, so the conclusion is more reliable. In a word, our study proves that attention can increase the subjective length of line segments under different attention paradigms, which also shows that attention can change the appearance of perception.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：B842

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