Characterizing visual performance fields: effects of transient covert attention, spatial frequency, eccentricity, task and set size
Characterizing visual performance fields: effects of transient covert attention, spatial frequency, eccentricity, task and set size
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DOI：
10.1163/15685680152692015
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发表时间：
2001-01-01
期刊：
影响因子：
--
通讯作者：
Cameron, EL
中科院分区：
文献类型：
--
作者：
Carrasco, M;Talgar, CP;Cameron, EL
我们调查了瞬时内隐注意是否会不同地影响“表现领域”（形状描绘的百分比正确的性能在特定位置的视野）的方向歧视，检测和定位任务，同时操纵一些视觉因素。我们发现，虽然注意力提高整体性能，它并没有影响性能字段。两种模式被观察到，无论是否存在一个当地的后掩模，刺激方向，或任务。水平垂直各向异性（HVA）变得更加明显的空间频率，偏心率和设置大小增加。一个垂直子午线不对称性（VMA）变得更加明显的空间频率和偏心率的增加，我们得出结论，性能领域是由视觉，而不是由瞬态注意力，约束。
We investigated whether transient covert attention would differentially affect 'performance fields' (shape depicted by percent correct performance at particular locations in the visual field) for orientation discrimination, detection and localization tasks, while manipulating a number of visual factors. We found that although attention improved overall performance, it did not affect performance fields. Two patterns were observed regardless of the presence of a local post-mask, the stimulus orientation, or the task. A horizontal-vertical anisotropy (HVA) became more pronounced as spatial frequency, eccentricity and set size increased. A vertical meridian asymmetry (VMA) became more pronounced as spatial frequency and eccentricity increased, We conclude that performance fields are determined by visual, rather than by transient attentional, constraints.