关于在双重任务情况下奖励利用的时间动态
Leif E Langsdorf1, Torsten Schubert2
1Institute for Psychology, Martin Luther University Halle-Wittenberg, Halle, Germany. leif.langsdorf@psych.uni-halle.de.
Attention, perception & psychophysics
|April 8, 2025
概括
参与者可以灵活地使用每个试验的奖励线索来提高双重任务的性能. 这种奖励利用提高了任务准备,导致更好的处理,即使在不可预测的任务时间.
科学领域:
- 认知心理学 认知心理学
- 神经科学是一个神经科学.
- 人与计算机的互动.
背景情况:
- 与单一任务相比,双重任务 (DT) 的性能通常会下降.
- 这种下降通常归因于串行响应选择中的中心瓶.
- 奖励前景可以改善DT处理,但逐试验的灵活性仍然不清楚.
研究的目的:
- 为了调查奖励信息是否可以在DT情况下灵活地在逐个试验的基础上使用.
- 为了确定奖励前景是否优化任务准备或触发额外的任务优化机制.
- 为了检查奖励对不同时间可预测性下的DT绩效的影响.
主要方法:
- 实验1:对任务1进行试验式奖励线索,可预测的线索-目标间隔 (CTI).
- 实验2:随机的CTIs减少任务1开始的时间可预测性.
- 在奖励和无奖励条件下,测量了任务1 (RT1) 和任务2 (RT2) 的反应时间.
主要成果:
- 奖励前景降低了RT1并改善了RT2,在短时间刺激开始异步 (SOA) 时,效应从任务1传播到任务2.
- 反应时间随着CTI的增加而减少,而奖励效应则随着更长的CTI而放大.
- 结果在两个实验中都是一致的,无论任务1的发病可预测性如何.
结论:
- 参与者可以灵活地利用奖励信息在试验逐试验的基础上.
- 奖励利用在双重任务中增强了与准备相关的处理改进.
- 这种好处适用于可预测和不那么可预测的任务开始条件.
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