Sohn Wonyeong, Papathomas Thomas V, Blaser Erik, Vidnyánszky Zoltán
Laboratory of Vision Research, Rutgers University, Piscataway, NJ 08854, USA.
Vision Res. 2004 Jun;44(12):1437-43. doi: 10.1016/j.visres.2003.12.010.
Object-based theories of visual attention predict that attempting to direct attention to a particular attribute of a visual object will result in an automatic selection of the whole object, including all of its features. It has been assumed, but not critically tested, that the spreading of attention from one feature to another in this manner, i.e. cross-feature attentional (CFA) effects, takes place at object-level stages of processing as opposed to early, local stages. In the present study we disambiguated these options for color-to-motion CFA by contrasting attention's effect on bivectorial transparent versus bivectorial locally paired motion displays. We found that association between features at the global, but not at the local, stage of motion processing leads to cross-feature attentional effects. These findings provide strong psychophysical evidence that such effects are indeed object-based.
基于客体的视觉注意理论预测，试图将注意力导向视觉客体的特定属性会导致对整个客体的自动选择，包括其所有特征。人们一直认为，以这种方式（即跨特征注意，CFA）从一个特征到另一个特征的注意力扩散发生在客体水平的加工阶段，而非早期的局部阶段，但尚未得到严格验证。在本研究中，我们通过对比注意力对双矢量透明运动显示和双矢量局部配对运动显示的影响，来明确颜色到运动的CFA的这些选项。我们发现，在运动加工的全局而非局部阶段，特征之间的关联会导致跨特征注意效应。这些发现提供了强有力的心理物理学证据，证明此类效应确实是基于客体的。
