重新定义运动反应的决策组成部分:来自词汇和对象决策任务的证据
Michele Scaltritti1, Francesca Giacomoni1, Remo Job1
1Dipartimento di Psicologia e Scienze Cognitive, Università degli Studi di Trento.
概括
决策模式往往将决策和行动分开,但这项研究显示了持续的过渡. 运动执行时间揭示了与决策相关的过程,挑战了对行动的纯粹非认知观点.
科学领域:
- 认知神经科学 认知神经科学
- 心理学 心理学 心理学
- 人类运动控制 人类运动控制
背景情况:
- 经典的决策模型假设序列过程,其中运动反应执行是决策结束后的非决策阶段.
- 最近的研究表明,决策和运动过程之间存在着更为连续的相互作用.
研究的目的:
- 研究人类参与者的决策和运动过程之间的过渡.
- 为了确定运动执行时间是否反映了认知决策组件.
主要方法:
- 电子肌图 (EMG) 信号在词汇和对象决策任务中被记录下来.
- 单一试验的反应时间被分为前运动和运动时间,以分析响应执行.
- 分析了行为反应 (按按下) 的准确性和速度.
主要成果:
- 与单词/真实物体相比,假词/假物体的反应速度较慢,影响了运动时间.
- 刺激类型的影响 (真实与伪) 即使在运动时间层面也显著.
- 尽管对反应和前运动时间有影响,但在高频和低频单词之间没有发现运动时间的显著差异.
结论:
- 运动反应执行不是纯粹的非认知,可以反映决策过程.
- 发动机时间似乎捕捉了特定的,可能迟发生的,像验证或控制这样的决定性组件.
- 这些发现挑战了传统的序列模型,并支持了对认知和行动的更完整的观点.
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