Li Andrea, Tzen Belinda, Yadgarova Alevtina, Zaidi Qasim
Department of Psychology, Queens College, 65-30 Kissena Boulevard, Flushing, NY 11367, USA.
Vision Res. 2008 Jan;48(2):244-52. doi: 10.1016/j.visres.2007.11.009. Epub 2007 Dec 31.
We used selective adaptation to identify the neural mechanisms responsible for 3-D shape perception from orientation flows in retinal images [Li, A., & Zaidi, Q. (2000). Perception of three-dimensional shape from texture is based on patterns of oriented energy. Vision Research 40 (2), 217-242)]. Three-dimensional shape adaptation could involve stages from photoreceptors to non-oriented retinal cells, oriented cells in striate cortex, and extra-striate cells that respond to 3-D slants. To psychophysically isolate the relevant stage, we used 3-D adapting stimuli created from real and illusory orientations, and test stimuli different from the adapting stimuli in phases and frequencies. The results showed that mechanisms that adapt to 3-D shapes combine real and illusory 2-D orientation information over a range of spatial frequencies.
我们运用选择性适应来确定负责从视网膜图像中的方向流感知三维形状的神经机制[Li, A., & Zaidi, Q. (2000). 从纹理感知三维形状基于定向能量模式。《视觉研究》40 (2), 217 - 242]。三维形状适应可能涉及从光感受器到非定向视网膜细胞、纹状皮层中的定向细胞以及对三维倾斜做出反应的纹外细胞等阶段。为了从心理物理学上分离出相关阶段，我们使用了由真实和虚幻方向创建的三维适应刺激，以及在相位和频率上与适应刺激不同的测试刺激。结果表明，适应三维形状的机制在一系列空间频率上结合了真实和虚幻的二维方向信息。
