Tracking second thoughts: continuous and discrete revision processes during visual lexical decision.
Tracking second thoughts: continuous and discrete revision processes during visual lexical decision.
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DOI：
10.1371/journal.pone.0116193
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Pezzulo G
中科院分区：
文献类型：
--
作者：
Barca L;Pezzulo G
我们研究了动态的词汇决策，要求参与者分类词汇和非词汇刺激，并记录他们的鼠标运动到响应按钮在选择。在之前的报告中，我们发现了更大的轨迹曲率和对低频词和伪词竞争对手的吸引力。这一分析并没有澄清两种情况下的轨迹曲率是否是由于反应方案之间的持续动态竞争，或者在从最初选择的反应到相反的反应的选择过程中是否发生了离散的修正过程（“改变主意”）。为了解开这两种可能性，在这里，我们分析了选择过程中鼠标移动的速度和加速度曲线。伪词的峰值移动速度相对于单词和字母串延迟100 ms。高频和低频单词和字母串的加速度曲线显示出一个蝴蝶图，其中一个加速度峰值在400 ms，一个减速峰值在650 ms。然而，伪词的加速度曲线有两个正峰值（在400和600 ms），随后是运动减速，与从词汇到非词汇反应按钮的决定变化相对应。这些结果说明低频词和伪词的分类过程存在着不同的在线过程，前者是一个持续的竞争过程，后者是一个离散的修正过程。
We studied the dynamics of lexical decisions by asking participants to categorize lexical and nonlexical stimuli and recording their mouse movements toward response buttons during the choice. In a previous report we revealed greater trajectory curvature and attraction to competitors for Low Frequency words and Pseudowords. This analysis did not clarify whether the trajectory curvature in the two conditions was due to a continuous dynamic competition between the response alternatives or if a discrete revision process (a "change of mind") took place during the choice from an initially selected response to the opposite one. To disentangle these two possibilities, here we analyse the velocity and acceleration profiles of mouse movements during the choice. Pseudowords' peak movement velocity occurred with 100ms delay with respect to words and Letters Strings. Acceleration profile for High and Low Frequency words and Letters Strings exhibited a butterfly plot with one acceleration peak at 400ms and one deceleration peak at 650ms. Differently, Pseudowords' acceleration profile had double positive peaks (at 400 and 600ms) followed by movement deceleration, in correspondence with changes in the decision from lexical to nonlexical response buttons. These results speak to different online processes during the categorization of Low Frequency words and Pseudowords, with a continuous competition process for the former and a discrete revision process for the latter.
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影响因子：
4.1
作者：
Kruschke, John K.
通讯作者：
Kruschke, John K.
DOI：
10.1080/01690960701626036
发表时间：
2008-01-01
期刊：
LANGUAGE AND COGNITIVE PROCESSES
影响因子：
--
作者：
Pagliuca, Giovanni;Arduino, Lisa S.;Burani, Cristina
通讯作者：
Burani, Cristina
影响因子：
5.3
作者：
Cisek, Paul
通讯作者：
Cisek, Paul
影响因子：
8.2
作者：
McKinstry, Chris;Dale, Rick;Spivey, Michael J.
通讯作者：
Spivey, Michael J.
影响因子：
4.3
作者：
Rigoux L;Guigon E
通讯作者：
Guigon E