大小判断任务中正负号及其异同对SNARC效应的影响
发布时间：2018-11-03 19:11
【摘要】：SNARC效应(Spatial-Numerical Association of Response Codes)是指被试对数字做按键反应时,对于较小的数字,按左键的速度快于按右键;对于较大的数字,按右键的速度快于按左键。本研究以ERP作为测量手段,采用修正的大小判断任务,旨在探究数字正负号及其异同对SNARC效应的影响。行为结果发现,在反应时上,当目标数字与基线数字正负号相同且基线数字为+5时,一致条件显著快于不一致条件。ERP结果发现,当目标数字与基线数字正负号相同时,无论基线数字为+5还是 5,在反应选择阶段,不一致都比一致条件更负且均诱发了P3。当目标数字与基线数字正负号相异时,若基线数字为+5,一致比不一致条件在刺激呈现阶段诱发了波幅显著更小的N300;若基线数字为 5,一致比不一致条件在反应执行阶段诱发了更正的LPP。无论目标数字与基线数字正负号相同还是相异,在反应选择阶段,不一致都比一致条件更负且均诱发了P3,表明出现了SNARC效应。同时,SNARC效应的出现激活了额叶头皮位置,负数加工伴随左额叶的激活,而正数加工伴随右额叶的激活,溯源分析结果进一步表明SNARC效应定位于额叶与顶叶。这些结果说明负数按实际大小表征在心理数字线上,支持了负数空间表征的个体发展论假说;表明符号捷径机制会改变SNARC效应的发生时间;同时证明了负数与正数的空间表征具有不同的优势半球。
[Abstract]:SNARC effect (Spatial-Numerical Association of Response Codes) refers to the rate of pressing the left key is faster for the smaller number than that of the right button, and for the larger number, the right button is faster than the left button. The purpose of this study is to investigate the effect of digital sign and its similarities and differences on the SNARC effect by using ERP as a measurement method and a modified size judgment task. The behavioral results showed that, in response time, when the target number was equal to the baseline number and the baseline number was 5, the consistent condition was significantly faster than the inconsistent condition. The ERP result found that when the target number and the baseline number sign were the same, Whether the baseline number is 5 or 5, the inconsistency is more negative than the consistent condition in the reaction selection stage, and all of them induce P3. When the target number is different from the baseline number, if the baseline number is 5, the N300 whose amplitude is significantly smaller than the inconsistent condition is induced at the stage of stimulus presentation. If the baseline number is 5, the consistent ratio inconsistent condition induces a corrected LPP. during the response execution phase Regardless of whether the target number and the baseline number are the same or different, in the reaction selection stage, the inconsistency is more negative than the consistent condition and the P3 is induced, which indicates that the SNARC effect appears. At the same time, the appearance of SNARC effect activated the frontal scalp position, the negative processing accompanied the activation of the left frontal lobe, while the positive processing accompanied the activation of the right frontal lobe. The traceability analysis further indicated that the SNARC effect was located in the frontal lobe and parietal lobe. These results show that negative numbers are represented on the psychological number line according to the actual size, which supports the hypothesis of individual development theory of negative number space representation, which indicates that the short-cut mechanism of symbol will change the time of SNARC effect. It is also proved that the spatial representation of negative and positive numbers has different dominant hemispheres.
【作者单位】： 首都师范大学心理系北京市"学习与认知"重点实验室;
【基金】：国家自然科学基金(31671127)资助
【分类号】：B842
，
本文编号：2308712
[Abstract]:SNARC effect (Spatial-Numerical Association of Response Codes) refers to the rate of pressing the left key is faster for the smaller number than that of the right button, and for the larger number, the right button is faster than the left button. The purpose of this study is to investigate the effect of digital sign and its similarities and differences on the SNARC effect by using ERP as a measurement method and a modified size judgment task. The behavioral results showed that, in response time, when the target number was equal to the baseline number and the baseline number was 5, the consistent condition was significantly faster than the inconsistent condition. The ERP result found that when the target number and the baseline number sign were the same, Whether the baseline number is 5 or 5, the inconsistency is more negative than the consistent condition in the reaction selection stage, and all of them induce P3. When the target number is different from the baseline number, if the baseline number is 5, the N300 whose amplitude is significantly smaller than the inconsistent condition is induced at the stage of stimulus presentation. If the baseline number is 5, the consistent ratio inconsistent condition induces a corrected LPP. during the response execution phase Regardless of whether the target number and the baseline number are the same or different, in the reaction selection stage, the inconsistency is more negative than the consistent condition and the P3 is induced, which indicates that the SNARC effect appears. At the same time, the appearance of SNARC effect activated the frontal scalp position, the negative processing accompanied the activation of the left frontal lobe, while the positive processing accompanied the activation of the right frontal lobe. The traceability analysis further indicated that the SNARC effect was located in the frontal lobe and parietal lobe. These results show that negative numbers are represented on the psychological number line according to the actual size, which supports the hypothesis of individual development theory of negative number space representation, which indicates that the short-cut mechanism of symbol will change the time of SNARC effect. It is also proved that the spatial representation of negative and positive numbers has different dominant hemispheres.
【作者单位】： 首都师范大学心理系北京市"学习与认知"重点实验室;
【基金】：国家自然科学基金(31671127)资助
【分类号】：B842
，
本文编号：2308712
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