Backward response-level crosstalk in the psychological refractory period paradigm.

Backward response-level crosstalk in the psychological refractory period paradigm.
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心理不应期范式中的后向反应水平串扰。

DOI:
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发表时间:
2006
期刊:
Journal of Experimental Psychology: Human Perception and Performance
影响因子:
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通讯作者:
M. Alderton
M. Alderton
中科院分区:
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文献类型:
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作者:
Jeff Miller;M. Alderton

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心理不应期(PRP)任务的瓶颈模型表明,在同一实验中,任务1的反应不应受到任务2的反应的影响,因为前者的选择在后者的选择开始之前完成。与这一概念相反,作者发现了反向反应水平的串音效应,其中任务2的反应力量要求影响任务1反应的力-时间动态。具体来说,任务2需要硬按键或软按键响应。当即将到来的任务2的反应是按硬而不是按软时,任务1的反应更难,这表明在任务1的处理达到最后的弹道发动机输出阶段之前,任务2的反应参数被激活了一些。使用侧翼范式的第三个实验表明,这种效应不是由与硬反应和软反应相关的刺激对反应的自动激活引起的。这种反向响应级串扰扩展了之前在PRP范式中发现的反向串扰,表明串扰可以影响电机输出和响应时间,甚至在执行的两个任务在语义上不相关的情况下也会出现。
Bottleneck models of psychological refractory period (PRP) tasks suggest that a Task 1 response should be unaffected by the Task 2 response in the same trial, because selection of the former finishes before selection of the latter begins. Contrary to this conception, the authors found backward response-level crosstalk effects in which Task 2 response force requirements influenced the force-time dynamics of Task 1 responses. Specifically, Task 2 required a hard or soft keypress response. Task 1 responses were harder when the upcoming Task 2 response was to press hard rather than soft, suggesting some activation of Task 2 response parameters before Task 1 processing reached the final ballistic motor output stage. A 3rd experiment using a flankers paradigm showed that this effect did not arise from automatic activation of responses by the stimuli associated with hard and soft responses. This backward response-level crosstalk extends previous findings of backward crosstalk in the PRP paradigm by showing that crosstalk can affect motor output as well as response time and can arise even when the 2 tasks being performed are not semantically related.
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