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首页> 外文期刊>Attention, perception & psychophysics >Of 'what' and 'where' in a natural search task: Active object handling supports object location memory beyond the object's identity
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Of 'what' and 'where' in a natural search task: Active object handling supports object location memory beyond the object's identity

机译：自然搜索任务中的“什么”和“何处”：活动对象处理支持超出对象标识的对象位置存储

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摘要

Looking for as well as actively manipulating objects that are relevant to ongoing behavioral goals are intricate parts of natural behavior. It is, however, not clear to what degree these two forms of interaction with our visual environment differ with regard to their memory representations. In a real-world paradigm, we investigated if physically engaging with objects as part of a search task influences identity and position memory differently for task-relevant versus irrelevant objects. Participants equipped with a mobile eye tracker either searched for cued objects without object interaction (Find condition) or actively collected the objects they found (Handle condition). In the following free-recall task, identity memory was assessed, demonstrating superior memory for relevant compared to irrelevant objects, but no difference between the Handle and Find conditions. Subsequently, location memory was inferred via times to first fixation in a final object search task. Active object manipulation and task-relevance interacted in that location memory for relevant objects was superior to irrelevant ones only in the Handle condition. Including previous object recall performance as a covariate in the linear mixed-model analysis of times to first fixation allowed us to explore the interaction between remembered/forgotten object identities and the execution of location memory. Identity memory performance predicted location memory in the Find but not the Handle condition, suggesting that active object handling leads to strong spatial representations independent of object identity memory. We argue that object handling facilitates the prioritization of relevant location information, but this might come at the cost of deprioritizing irrelevant information.
机译：寻找并积极操纵与正在进行的行为目标相关的对象是自然行为的复杂组成部分。但是，尚不清楚这两种形式的与我们的视觉环境的交互在记忆表达上的差异程度。在现实世界的范例中，我们调查了作为搜索任务一部分与对象进行的物理接触是否会对与任务相关和无关的对象产生不同的身份和位置记忆影响。配备了移动眼动仪的参与者可以在没有对象交互的情况下搜索提示的对象（查找条件），或者主动收集找到的对象（处理条件）。在下面的自由调用任务中，对身份记忆进行了评估，表明与无关物体相比，相关物体具有更高的记忆力，但是Handle和Find条件之间没有差异。随后，随着时间的推移，位置记忆被推断为最终目标搜索任务中的首次定位。在相关对象的位置存储器中交互的活动对象操纵和任务相关性仅在Handle条件下才优于不相关对象。将先前对象的召回性能作为对首次注视时间的线性混合模型分析的协变量，可以让我们探索记忆/遗忘的对象身份与位置记忆执行之间的相互作用。身份记忆性能可预测“查找”条件下的位置记忆，但不能预测“句柄”条件，这表明主动对象处理可产生独立于对象身份记忆的强大空间表示。我们认为对象处理有助于对相关位置信息进行优先级排序，但这可能会以不相关信息的优先级为代价。

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