Noudoost Behrad, Adibi Mehdi, Moeeny Ali, Esteky Hossein
School of Cognitive Sciences, Institute for Studies in Theoretical Physics and Mathematics, Tehran, Iran.
Brain Res Cogn Brain Res. 2005 Aug;24(3):436-41. doi: 10.1016/j.cogbrainres.2005.02.012. Epub 2005 Mar 31.
Configural processing could develop for non-face visual objects as one becomes familiar with those objects through repeated exposure. To explore the role of familiarity in object recognition, we studied the effect of adaptation to a visual object (adapting stimulus) on the identification performance of other objects (test stimulus) while adapting and test stimuli were exactly the same, shared parts or were completely different. We used a subset of English alphabets (p, q, d and b) as familiar objects and an unfamiliar set of symbols constructed from same parts but with different configurations. Adaptation to a member of each set led to a lower identification performance for that object in a crowding paradigm. Adaptation to each member of the unfamiliar set resulted in decreased identification performance for the same object and those members of the set that shared parts with the adapting stimulus. But no such transfer of adaptation was observed for the familiar set. Our results support the notion that processing of object parts plays an important role in the recognition of unfamiliar objects while recognition of familiar objects is mainly based on configural processing mechanisms.
随着人们通过反复接触而熟悉非面部视觉对象，构型加工可能会针对这些对象发展起来。为了探究熟悉度在物体识别中的作用，我们研究了对一个视觉对象（适应刺激）的适应对其他对象（测试刺激）识别性能的影响，其中适应刺激和测试刺激完全相同、有部分共享或完全不同。我们使用了一组英文字母（p、q、d和b）作为熟悉对象，以及一组由相同部分但不同构型构成的不熟悉符号。在拥挤范式中，对每组中的一个成员进行适应会导致该对象的识别性能降低。对不熟悉组的每个成员进行适应会导致同一对象以及与适应刺激有部分共享的该组其他成员的识别性能下降。但对于熟悉组，未观察到这种适应转移。我们的结果支持这样一种观点，即物体部分的加工在不熟悉物体的识别中起重要作用，而熟悉物体的识别主要基于构型加工机制。
