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Alternative TitleInformation Distribution Modulates Integration Strategies: Evidence from Eye Movements
任衍具1; 禤宇明1; 傅小兰1
Source Publication心理科学
Contribution Rank2
Other AbstractIn the present study, empty cell localization task was used to explore how information was integrated between visual short - term memory (VSTM) and visual perception. To explain the participants'performance of the task, two hypotheses were proposed: image - percept hypothesis and convert - and - compare hypothesis. The image - percept hypothesis suggests that participants first encode the locations of dots in array 1 and its mental image is formed to integrate with array 2. On the contrary, the convert - and - compare hypothesis asserts that participants first encode the location of empty cells in array 1 and its negative image is formed to compare with array 2. Analyzing the existing evidence for or against the two hypotheses, we found that the difference in dot distribution might contribute to different integrating strategies. To test this hypothesis, two experiments were conducted. In Experiment 1, the dot distribution of sequential arrays (4 - 11,5 - 10, 6 - 9, 7 - 8 and 8 - 7 ) and interstimulus interval ( ISI, 500 ms, 1500ms and 2500 ms) were manipulated. The resuhs showed that the accuracy was a U -shaped function of array 1 dot number and at the condition of 6 - 9 distribution the accuracy reached a lowest value. These findings suggested that integration strategies might change from "memorizing dots" to "memorizing empty cells" of array 1. In Experiment 2, participants" eye movements were monitored when performing empty cell localization task. Dot distribution varied in 3 levels (5 - 10, 6 -9, 7 -8 ) and ISI varied in 2 levels (500ms and 1500ms). The accuracy again showed a U -shaped function of array 1 dot number. In 1500ms ISI condition, there were significant differences in terms of eye movement patterns between the 3 levels of dot distribution. Specifically, in 5 -10 condition, participants showed a bias to look at dot locations during ISI period; in 6 -9 condition, participants looked at locations of dots or empty cells by chance; while in 7 - 8 condition, a bias to look at empty cell location was showed. Thus, we found clear eye -movement evidence indicating a change of integration strategy from "memorizing dots" to "memorizing empty ceils" in Experiment 2. In sum, the present study suggests that human participants are flexible in integrating sequentially presented information because a change of integration strategy is revealed by our data. We argue that the limit of VSTM capacity plays an important role in this adaptive characteristic. It seems that the "memorizing dots" strategy is adopted when dot numbers are within the capacity of VSTM while the " memorizing empty cells" strategy is adopted when dot numbers is out of VSTM capacity.
Keyword序列点阵 空白单元格定位 图像—知觉整合假说 转换—比较假说 眼动
Subject Area感知觉心理学
Indexed ByCSCD
Funding Organization本研究得到国家重点基础研究发展计划(2011CB302201)、山东省“十二五”发展与教育心理学强化重点学科建设项目和山东师范大学博士科研扁动基金项目的资助.
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Document Type期刊论文
Corresponding Author傅小兰
Recommended Citation
GB/T 7714
任衍具,禤宇明,傅小兰. 视觉信息分布调节信息整合策略:来自眼动的证据[J]. 心理科学,2013,36(1):002-006.
APA 任衍具,禤宇明,&傅小兰.(2013).视觉信息分布调节信息整合策略:来自眼动的证据.心理科学,36(1),002-006.
MLA 任衍具,et al."视觉信息分布调节信息整合策略:来自眼动的证据".心理科学 36.1(2013):002-006.
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