Configural representations in spatial working memory: modulation by perceptual segregation and voluntary attention.

Configural representations in spatial working memory: modulation by perceptual segregation and voluntary attention.
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DOI:
10.3758/s13414-011-0180-0
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发表时间:
2011-10
期刊:
Attention, perception & psychophysics
影响因子:
--
通讯作者:
Reuter-Lorenz PA
Reuter-Lorenz PA
中科院分区:
其他
文献类型:
--
作者:
Gmeindl L;Nelson JK;Wiggin T;Reuter-Lorenz PA

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在工作记忆中,多个空间位置是以什么形式呈现的?目前的研究表明,人们经常保持视觉空间刺激的结构属性(项目间关系),即使这一信息明显与任务无关。然而,研究结果也表明,在刺激呈现之前自愿分配选择性注意,以及基于特征的相关和无关刺激的知觉分离,可以消除刺激配置对位置变化检测性能的影响。相反,在呈现刺激阵列后,对相关目标位置的自愿注意未能减弱这些影响。因此,尽管自愿的选择性注意可以隔离或阻止对不相关的刺激位置和配置属性的编码,但人们可能由于注意资源的限制,无法可靠地隔离或抑制已编码到工作记忆中的配置表征。
In what form are multiple spatial locations represented in working memory? The current study revealed that people often maintain the configural properties (inter-item relationships) of visuospatial stimuli even when this information is explicitly task-irrelevant. However, results also indicate that the voluntary allocation of selective attention prior to stimulus presentation, as well as feature-based perceptual segregation of relevant from irrelevant stimuli, can eliminate the influences of stimulus configuration on location change detection performance. In contrast, voluntary attention cued to the relevant target location following presentation of the stimulus array failed to attenuate these influences. Thus, whereas voluntary selective attention can isolate or prevent the encoding of irrelevant stimulus locations and configural properties, people, perhaps due to limitations in attentional resources, reliably fail to isolate or suppress configural representations that have been encoded into working memory.
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