Research on visuospatial memory has shown that egocentric (subject‐to‐object) and allocentric (object‐to‐object) reference frames are connected to categorical (non‐metric) and coordinate (metric) spatial relations, and that motor resources are recruited especially when processing spatial information in peripersonal (within arm reaching) than extrapersonal (outside arm reaching) space. In order to perform our daily‐life activities, these spatial components cooperate along a continuum from recognition‐related (e.g., recognizing stimuli) to action‐related (e.g., reaching stimuli) purposes. Therefore, it is possible that some types of spatial representations rely more on action/motor processes than others. Here, we explored the role of motor resources in the combinations of these visuospatial memory components. A motor interference paradigm was adopted in which participants had their arms bent behind their back or free during a spatial memory task. This task consisted in memorizing triads of objects and then verbally judging what was the object: (1) closest to/farthest from the participant (egocentric coordinate); (2) to the right/left of the participant (egocentric categorical); (3) closest to/farthest from a target object (allocentric coordinate); and (4) on the right/left of a target object (allocentric categorical). The triads appeared in participants' peripersonal (Experiment 1) or extrapersonal (Experiment 2) space. The results of Experiment 1 showed that motor interference selectively damaged egocentric‐coordinate judgements but not the other spatial combinations. The results of Experiment 2 showed that the interference effect disappeared when the objects were in the extrapersonal space. A third follow‐up study using a within‐subject design confirmed the overall pattern of results. Our findings provide evidence that motor resources play an important role in the combination of coordinate spatial relations and egocentric representations in peripersonal space.

中文翻译：

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人际空间中以自我为中心的度量表示形式：运动资源与空间记忆之间的桥梁

对视觉空间记忆的研究表明，以自我为中心（对象到对象）和同心为中心（对象到对象）的参考框架连接到分类（非度量）和坐标（度量）空间关系，并且运动资源尤其被招募当在人际（手臂到达）而不是个人（手臂到达）空间中处理空间信息时。为了执行我们的日常生活，这些空间组成部分沿着从识别相​​关（例如，识别刺激）到行动相关（例如，达到刺激）目的的连续过程进行协作。因此，某些类型的空间表示可能比其他类型更依赖于动作/运动过程。在这里，我们探讨了运动资源在这些视觉空间存储组件的组合中的作用。采用了一种运动干扰范例，其中参与者在空间记忆任务中将手臂弯曲到背后或自由地弯曲。这项任务包括记住对象的三合会，然后口头判断对象是什么：（1）与参与者最接近/最远（以自我为中心的坐标）；（2）在参与者的右边/左边（以自我为中心的分类）；（3）离目标物体最近/最远（方位轴坐标）；（4）在目标对象的右侧/左侧（分类为allocentric）。三合会出现在参与者的个人（实验1）或超个人（实验2）空间中。实验1的结果表明，电动机干扰选择性地破坏了以自我为中心的坐标判断，但没有破坏其他空间组合。实验2的结果表明，当物体位于人际空间中时，干扰效果消失了。使用受试者内部设计进行的第三次随访研究证实了总体结果模式。我们的发现提供了证据，证明运动资源在个人空间中的坐标空间关系和以自我为中心的表示的结合中起着重要作用。