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Redefining the decisional components of motor responses: Evidence from lexical and object decision tasks.
Journal of Experimental Psychology: Human Perception and Performance ( IF 2.1 ) Pub Date : 2023-06-01 , DOI: 10.1037/xhp0001113
Michele Scaltritti 1 , Francesca Giacomoni 1 , Remo Job 1 , Simone Sulpizio 2
Affiliation  

Models of decision making focusing on two-alternative choices have classically described motor-response execution as a nondecisional stage that serially follows the termination of decision processes. Recent evidence, however, points toward a more continuous transition between decision and motor processes. We investigated this transition in two lexical decisions and one object decision task. By recording the electromyographic (EMG) signal associated with the muscle responsible for the manual responses (i.e., button press), we partitioned single-trial reaction times into premotor (the time elapsing from stimulus onset until the onset of the EMG burst) and motor times (the time elapsing from the onset of the EMG burst and the button press), with the latter measuring response execution. Responses were slower for pseudowords and pseudo-objects compared to words and real objects. Importantly, these effects were reliable even at the level of motor time measures. Differently, despite the reliable effect at the level of reaction times and premotor times, there was no difference in motor times between high- and low-frequency words. Although these results, in line with recent evidence, challenge a purely noncognitive characterization of motor-response execution, they further suggest that motor times may selectively capture specific decisional components, which we identify with late-occurring verification and/or control mechanisms. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

中文翻译:

重新定义运动反应的决策成分:来自词汇和对象决策任务的证据。

专注于两种备选选择的决策模型经典地将运动反应执行描述为连续跟随决策过程终止的非决策阶段。然而,最近的证据表明,决策过程和运动过程之间的过渡更为连续。我们在两个词汇决策和一个对象决策任务中研究了这种转变。通过记录与负责手动反应(即按下按钮)的肌肉相关的肌电图(EMG)信号,我们将单次试验反应时间分为运动前(从刺激开始到 EMG 爆发开始所经过的时间)和运动时间(从 EMG 爆发开始到按下按钮所经过的时间),后者测量响应执行。与单词和真实物体相比,伪词和伪物体的反应更慢。重要的是,即使在运动时间测量的水平上,这些效果也是可靠的。不同的是,尽管在反应时间和运动前时间水平上有可靠的效果,但高频词和低频词之间的运动时间没有差异。尽管这些结果与最近的证据一致,对运动反应执行的纯粹非认知特征提出了挑战,但它们进一步表明,运动时间可以选择性地捕获特定的决策成分,我们将其识别为迟发的验证和/或控制机制。(PsycInfo 数据库记录 (c) 2023 APA,保留所有权利)。尽管在反应时间和运动前时间水平上有可靠的效果,但高频词和低频词之间的运动时间没有差异。尽管这些结果与最近的证据一致,对运动反应执行的纯粹非认知特征提出了挑战,但它们进一步表明,运动时间可以选择性地捕获特定的决策成分,我们将其识别为迟发的验证和/或控制机制。(PsycInfo 数据库记录 (c) 2023 APA,保留所有权利)。尽管在反应时间和运动前时间水平上有可靠的效果,但高频词和低频词之间的运动时间没有差异。尽管这些结果与最近的证据一致,对运动反应执行的纯粹非认知特征提出了挑战,但它们进一步表明,运动时间可以选择性地捕获特定的决策成分,我们将其识别为迟发的验证和/或控制机制。(PsycInfo 数据库记录 (c) 2023 APA,保留所有权利)。他们进一步表明,电机时间可能有选择地捕获特定的决策组件,我们将这些组件与迟发的验证和/或控制机制联系起来。(PsycInfo 数据库记录 (c) 2023 APA,保留所有权利)。他们进一步表明,电机时间可能有选择地捕获特定的决策组件,我们将这些组件与迟发的验证和/或控制机制联系起来。(PsycInfo 数据库记录 (c) 2023 APA,保留所有权利)。
更新日期:2023-06-01
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