The urgency-gating model can explain the effects of early evidence
The urgency-gating model can explain the effects of early evidence
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DOI：
10.3758/s13423-015-0851-2
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发表时间：
2015-12-01
影响因子：
3.5
通讯作者：
Cisek, Paul
中科院分区：
文献类型：
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作者：
Carland, Matthew A.;Thura, David;Cisek, Paul
在最近的一份报告中，温克尔，Keuken，货车Maanen，Wagenmakers和Forstmann（Psychonomics Bulletin and Review 21（3）：777-784，2014）表明，在随机点运动辨别任务期间，运动证据的早期差异会影响人类受试者的反应时间（RT）和错误率。他们用这一点作为支持漂移扩散模型和反对紧急门控模型的论据。然而，他们对紧急门控模型的实现是不完整的，因为它缺乏处理噪声输入所必需的低通滤波器，例如他们在实验任务中使用的运动信号。此外，通过将分析仅仅集中在平均RT的比较上，他们高估了早期信息对个体试验的影响时间。在这里，我们表明，如果紧急门控模型是正确的实施，包括一个低通滤波器与250 ms的时间常数，它可以成功地再现温克尔等人的结果。实验。
In a recent report, Winkel, Keuken, van Maanen, Wagenmakers & Forstmann (Psychonomics Bulletin and Review 21(3): 777-784, 2014) show that during a random-dot motion discrimination task, early differences in motion evidence can influence reaction times (RTs) and error rates in human subjects. They use this as an argument in favor of the drift-diffusion model and against the urgency-gating model. However, their implementation of the urgency-gating model is incomplete, as it lacks the low-pass filter that is necessary to deal with noisy input such as the motion signal used in their experimental task. Furthermore, by focusing analyses solely on comparison of mean RTs they overestimate how long early information influences individual trials. Here, we show that if the urgency-gating model is correctly implemented, including a low-pass filter with a 250 ms time constant, it can successfully reproduce the results of the Winkel et al. experiment.