Perception and neuronal coding of subjective contours in the owl
Perception and neuronal coding of subjective contours in the owl
复制标题
猫头鹰主观轮廓的感知和神经元编码
DOI：
10.1038/10217
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发表时间：
1999
影响因子：
25
通讯作者：
H. Wagner
中科院分区：
文献类型：
--
作者：
A. Nieder;H. Wagner
稳健的形式感知和潜在的神经元机制需要对象边界的广义表示，而与它们的定义方式无关。形状感知所必需的一种视觉能力是重建视网膜图像中缺失的轮廓。在这里，我们表明谷仓猫头鹰感知由光栅间隙和相移邻接光栅定义的主观轮廓。此外，对清醒、行为良好的鸟类的视觉前脑（视觉乌尔斯特）的单神经元记录显示，有很大比例的神经元发出这种主观轮廓的信号，与局部刺激属性无关。这些数据表明视觉 Wulst 在基于轮廓的形式感知中很重要，并且表现出类似于哺乳动物纹外皮层的功能复杂性。
Robust form perception and underlying neuronal mechanisms require generalized representation of object boundaries, independent of how they are defined. One visual ability essential for form perception is reconstruction of contours absent from the retinal image. Here we show that barn owls perceive subjective contours defined by grating gaps and phase-shifted abutting gratings. Moreover, single-neuron recordings from visual forebrain (visual Wulst) of awake, behaving birds revealed a high proportion of neurons signaling such subjective contours, independent of local stimulus attributes. These data suggest that the visual Wulst is important in contour-based form perception and exhibits a functional complexity analogous to mammalian extrastriate cortex.