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Physiological evidence of interactive object-based and space-based attention mechanisms.

机译：互动的基于对象和基于空间的注意力机制的生理证据。

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摘要

Visual attention has been likened to a spotlight that enhances both attended and nearby objects. However, experiments employing overlapping stimuli have shown that individuals are able to attend selectively to one object while suppressing the other. These data are problematic for spotlight theories of selection, suggesting that under some circumstances, selection may also be made with respect to objects rather than spatial location. It has been suggested that these two types of selection are achieved by a single mechanism by which the attentional spotlight conforms to the boundary of an object. Alternatively, space- and object-based selection may be independent, but mutually supporting systems. The present set of experiments examined the relationship between object-based and space-based selection using event-related potentials (ERPs). Previous research has shown that attention to spatial location results in an enhancement of the P1 and N1 components of the ERP. This pattern is associated with spatial attention and is not seen when observers are attending to non-spatial attributes, such as color or shape. In the object-based attention condition, ERPs were collected in response to flashes on attended objects, unattended overlapping objects, and unattended objects at far locations. In the space-based attention condition, ERPs were elicited by the same flashes occurring in empty locations. Both space-based and object-based ERPs produced P1 and N1 components, but only the space-based ERPs showed an attentional effect on P1 amplitude. The attentional effect on the parietal N1 was nearly identical for both object- and space-based ERPS. These data suggest that space and object-based attention may be separate, but interactive systems.
机译：视觉注意力已被比喻为聚光灯，可以同时增强人们和附近的物体。然而，采用重叠刺激的实验表明，个体能够选择性地照顾一个物体，而压制另一个物体。这些数据对于选择的聚光灯理论是有问题的，表明在某些情况下，选择也可能针对对象而不是空间位置。已经提出，这两种类型的选择是通过一种使注意力聚光灯与物体的边界一致的单一机制来实现的。替代地，基于空间和基于对象的选择可以是独立的但相互支持的系统。本组实验使用事件相关电位（ERP）研究了基于对象的选择与基于空间的选择之间的关系。先前的研究表明，对空间位置的关注会导致ERP中P1和N1组件的增强。这种模式与空间注意力相关联，当观察者关注非空间属性（例如颜色或形状）时，看不到该模式。在基于对象的注意条件下，ERP的收集是为了响应有人照看对象，无人照看的重叠对象和远处无人照看的对象的闪烁。在空基注意条件下，ERP是由在空旷位置发生的相同闪烁引起的。天基ERP和基于对象的ERP都产生P1和N1组件，但是只有基于天基的ERP对P1振幅显示出注意作用。对于基于对象的ERP和基于空间的ERPS，对顶叶N1的注意力影响几乎相同。这些数据表明，基于空间和基于对象的注意力可能是分开的，但是是交互式的系统。

著录项

  • 作者

    Burton, Pamela Ann.;

  • 作者单位

    University of Delaware.;

  • 授予单位 University of Delaware.;
  • 学科 Psychology Cognitive.
  • 学位 Ph.D.
  • 年度 2005
  • 页码 139 p.
  • 总页数 139
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 心理学;
  • 关键词

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