注意力增强了线索提示位置的对比敏感度，同时损害了非线索提示位置的对比敏感度。

Attention enhances contrast sensitivity at cued and impairs it at uncued locations.

作者信息

Pestilli Franco, Carrasco Marisa

机构信息

Department of Psychology, New York University, 6 Washington Place, 8th Fl, New York, NY 10003-6634, USA.

出版信息

Vision Res. 2005 Jun;45(14):1867-75. doi: 10.1016/j.visres.2005.01.019.

DOI:10.1016/j.visres.2005.01.019

PMID:15797776

Abstract

Transient covert attention increases contrast sensitivity at the target location with an informative spatial cue. Here we explored whether an uninformative spatial cue (50% valid with two possible locations) also increases contrast sensitivity and whether contrast sensitivity is altered at the uncued location as compared to the neutral condition. For all four observers, transient covert attention had both a benefit and a cost: it enhanced contrast sensitivity at the cued location and impaired contrast sensitivity at the uncued location at both parafoveal and peripheral positions. These results are consistent with the idea of limited resources, and indicate that transient attention helps control the expenditure of cortical computation.

摘要

短暂的隐蔽注意通过信息性空间线索提高目标位置的对比敏感度。在此，我们探究了非信息性空间线索（在两个可能位置的有效性为50%）是否也会提高对比敏感度，以及与中性条件相比，在未提示位置的对比敏感度是否会发生改变。对于所有四名观察者而言，短暂的隐蔽注意既有益处也有代价：它提高了中央凹旁和周边位置提示位置的对比敏感度，并损害了未提示位置的对比敏感度。这些结果与资源有限的观点一致，并表明短暂注意有助于控制皮层计算的消耗。