【摘要】：SNARC效應(yīng)(Spatial-Numerical Association of Response Codes)是指被試對(duì)數(shù)字做按鍵反應(yīng)時(shí),對(duì)于較小的數(shù)字,按左鍵的速度快于按右鍵;對(duì)于較大的數(shù)字,按右鍵的速度快于按左鍵。本研究以ERP作為測(cè)量手段,采用修正的大小判斷任務(wù),旨在探究數(shù)字正負(fù)號(hào)及其異同對(duì)SNARC效應(yīng)的影響。行為結(jié)果發(fā)現(xiàn),在反應(yīng)時(shí)上,當(dāng)目標(biāo)數(shù)字與基線數(shù)字正負(fù)號(hào)相同且基線數(shù)字為+5時(shí),一致條件顯著快于不一致條件。ERP結(jié)果發(fā)現(xiàn),當(dāng)目標(biāo)數(shù)字與基線數(shù)字正負(fù)號(hào)相同時(shí),無(wú)論基線數(shù)字為+5還是 5,在反應(yīng)選擇階段,不一致都比一致條件更負(fù)且均誘發(fā)了P3。當(dāng)目標(biāo)數(shù)字與基線數(shù)字正負(fù)號(hào)相異時(shí),若基線數(shù)字為+5,一致比不一致條件在刺激呈現(xiàn)階段誘發(fā)了波幅顯著更小的N300;若基線數(shù)字為 5,一致比不一致條件在反應(yīng)執(zhí)行階段誘發(fā)了更正的LPP。無(wú)論目標(biāo)數(shù)字與基線數(shù)字正負(fù)號(hào)相同還是相異,在反應(yīng)選擇階段,不一致都比一致條件更負(fù)且均誘發(fā)了P3,表明出現(xiàn)了SNARC效應(yīng)。同時(shí),SNARC效應(yīng)的出現(xiàn)激活了額葉頭皮位置,負(fù)數(shù)加工伴隨左額葉的激活,而正數(shù)加工伴隨右額葉的激活,溯源分析結(jié)果進(jìn)一步表明SNARC效應(yīng)定位于額葉與頂葉。這些結(jié)果說(shuō)明負(fù)數(shù)按實(shí)際大小表征在心理數(shù)字線上,支持了負(fù)數(shù)空間表征的個(gè)體發(fā)展論假說(shuō);表明符號(hào)捷徑機(jī)制會(huì)改變SNARC效應(yīng)的發(fā)生時(shí)間;同時(shí)證明了負(fù)數(shù)與正數(shù)的空間表征具有不同的優(yōu)勢(shì)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.
【作者單位】： 首都師范大學(xué)心理系北京市"學(xué)習(xí)與認(rèn)知"重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金(31671127)資助
【分類號(hào)】：B842
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本文編號(hào)：2308711