Joint coding of shape and blur in area V4.

Joint coding of shape and blur in area V4.
复制标题

DOI:
10.1038/s41467-017-02438-8
复制
发表时间:
2018-01-31
影响因子:
16.6
通讯作者:
Pasupathy A
Pasupathy A
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Oleskiw TD;Nowack A;Pasupathy A

文献摘要

参考文献

被引文献

相似文献

边缘模糊是自然图像的一个普遍特征,被认为有助于包括分割和深度感知在内的多种视觉过程。此外,明确结合联合收割机模糊和形状信息的图像描述提供了自然场景的完整表示。在这里,我们报告的第一个演示的模糊编码在灵长类动物的视觉皮层:猕猴V4神经元表现出调谐对象的形状和边界模糊,与观察到的模糊调谐不解释潜在的混淆,包括刺激的大小,强度,或曲率。一个描述性的模型,其中模糊选择性被铸造作为一个独特的神经过程,调节形状选择V4神经元的增益解释观察到的数据,支持的假设,形状和模糊是一个足够的神经代码的基本特征,在V4中的自然图像表示。物体的模糊边缘可以帮助深度感知和分割,但它如何与视觉通路中的形状信息相结合尚不清楚。在这里,作者报告说,高级视觉区V4的神经元代表物体形状和边界模糊,控制刺激的大小,强度和曲率。
Edge blur, a prevalent feature of natural images, is believed to facilitate multiple visual processes including segmentation and depth perception. Furthermore, image descriptions that explicitly combine blur and shape information provide complete representations of naturalistic scenes. Here we report the first demonstration of blur encoding in primate visual cortex: neurons in macaque V4 exhibit tuning for both object shape and boundary blur, with observed blur tuning not explained by potential confounds including stimulus size, intensity, or curvature. A descriptive model wherein blur selectivity is cast as a distinct neural process that modulates the gain of shape-selective V4 neurons explains observed data, supporting the hypothesis that shape and blur are fundamental features of a sufficient neural code for natural image representation in V4. Blurred edges of objects can aid in depth perception and segmentation, yet how it is combined with shape information in the visual pathway is unknown. Here the authors report that neurons in higher visual area V4 represent both object shape and boundary blur, controlling for stimulus size, intensity and curvature.
DOI: 10.1037/h0054663
发表时间: 1954-01-01
影响因子: 5.4
作者:
ATTNEAVE, F
通讯作者: ATTNEAVE, F
DOI: 10.1523/jneurosci.4139-15.2016
发表时间: 2016-05-18
影响因子: 5.3
作者:
El-Shamayleh, Yasmine;Pasupathy, Anitha
通讯作者: Pasupathy, Anitha
DOI: 10.2466/pms.89.6.571-584
发表时间: 1999-10-01
影响因子: 1.6
作者:
Allen, BP
通讯作者: Allen, BP
DOI: 10.1523/jneurosci.1890-11.2011
发表时间: 2011-08-31
期刊: The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子: --
作者:
Bushnell BN;Harding PJ;Kosai Y;Bair W;Pasupathy A
通讯作者: Pasupathy A
DOI: 10.1016/s0042-6989(97)00121-1
发表时间: 1997-12-01
期刊: VISION RESEARCH
影响因子: 1.8
作者:
Bell, AJ;Sejnowski, TJ
通讯作者: Sejnowski, TJ