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首页> 外文期刊>Experimental Brain Research >Differential effects of advance semantic cues on grasping, naming, and manual estimation.
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Differential effects of advance semantic cues on grasping, naming, and manual estimation.

机译：高级语义提示对抓取，命名和手动估计的不同影响。

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摘要

In the three experiments reported here, we systematically investigated when and/or how prior semantic information about a target-object would affect the programming and execution of grasping movements. A name-length association was first created during a practice phase while participants performed one of the three tasks: grasping, naming, or manual estimation of an object's length upon an auditory presentation of its name. In the subsequent test phase, in the majority of trials, these names correctly indicated the upcoming object for a grasping task or a control naming task (Experiment 1A and 1B), and a grasping task or a manual estimation of object length (Experiment 2). In both experiments, a name was occasionally incongruent or a neutral cue (a burst of white noise) was presented instead. Although in the grasping task, semantic cues (both congruent and incongruent) consistently facilitated movement-onset time (indicating a preparatory-set like effect), the impact of these cues on the formation of grasping aperture was less consistent or absent. The experiments also demonstrated that naming and perceptual estimation of object length were affected differently from grasping by the same semantic cues, with the congruent cues facilitating and the incongruent cues slowing down response onset. These findings reinforce and extend the proposal that the transformations of visual and semantic information for perceptually-driven tasks are quite different from the transformations of the same information for the programming and control of object-directed action.
机译：在这里报告的三个实验中，我们系统地研究了何时和/或关于目标对象的先验语义信息将如何影响抓握动作的编程和执行。名称长度关联首先在练习阶段创建，而参与者执行以下三个任务之一：在听觉上呈现对象名称时，掌握，命名或手动估计对象的长度。在随后的测试阶段中，在大多数试验中，这些名称正确指示了即将执行的抓握任务或控制命名任务的对象（实验1A和1B）以及抓握任务或对象长度的手动估计（实验2） 。在这两个实验中，偶尔会出现名称不一致或出现中性提示（白噪声爆发）的情况。尽管在抓取任务中，语义提示（一致的和不一致的）始终促进运动开始时间（表明预备组效果），但是这些提示对抓取孔的形成的影响不太一致或不存在。实验还表明，对象长度的命名和知觉估计与相同语义提示的掌握方式不同，一致提示有助于协调，不一致提示则减缓了反应的发生。这些发现加强并扩展了这样的建议，即用于感知驱动任务的视觉和语义信息的转换与用于编程和控制对象定向动作的相同信息的转换完全不同。

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