Comparative studies on hierarchical integration of visual features

作为一种系统的视觉特征层次整合方法，本研究包括以下主题：1。运动-形状和运动-颜色在工作记忆过程中的关联。当刺激的运动方向（垂直或水平）与试验结束时所需的选择（颜色辨别或形状辨别）唯一相关时，鸽子会根据运动选择性地记忆相关信息。相同/不同的动作辨别。为了区分同时移动和向不同方向移动的图标的运动阵列，鸽子使用了相同显示的整体模式以及单个图标的相对运动。深度旋转人脸静态和动态图像的识别。动态视图训练未能增强鸽子的视点不变性，这表明鸽子没有将2D视图整合到3D对象中。分层视觉特征的使用。在区分卡通人物时，鸽子既使用全局信息，也使用局部信息，并根据特定的感知环境将这些信息混合在一起。上级范畴成员的功能等价。鸽子被训练来区分一个原型类别的典型和非典型样本，以一种与原型类别的层次特征结构一致的方式，将感知上不同的非典型样本视为功能等效。

The topics included in the present study conducted as a systematic approach to hierarchical integration of visual features are :1.Motion-shape and motion-color associations in working memory processes. When motion orientation (vertical or horizontal) of stimuli was uniquely associated with the choice required at the end of trials (hue-discrimination or shape-discrimination), pigeons selectively memorized the relevant information depending on the motion.2.SAME/DIFFERENT motion discrimination. To discriminate motion arrays of icons moving in unison and in different directions, pigeons used the global patterns of the SAME displays as well as relative motions of individual icons.3.Recognition of static and dynamic images of depth-rotated human faces. Dynamic-view training failed to enhance view-point invariance in pigeons, suggesting that pigeons are not integrating 2D views into, a 3D object.4.Usage of hierarchical visual features. In discriminating cartoon characters pigeons used both global and local aspects, with different mixtures of these types of information depending on the particular perceptual context.5.Functional equivalence of superordinate category members. Pigeons having been trained to classify typical and atypical exemplars of a prototype category treated the perceptually dissimilar atypical exemplars as functionally equivalent, in a manner consistent with the hierarchical feature structure of the prototype category.