Visual Functions of Primate Area V4.

Visual Functions of Primate Area V4.
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DOI:
10.1146/annurev-vision-030320-041306
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发表时间:
2020-09-15
影响因子:
6
通讯作者:
Kim T
Kim T
中科院分区:
医学2区
文献类型:
--
作者:
Pasupathy A;Popovkina DV;Kim T

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V4区-本次审查的重点-是一个中级加工阶段沿腹侧视觉通路的猕猴沿着。V4与其他视觉皮层区域沿着腹侧和背侧视觉流、额叶皮层区域和几个皮层下结构广泛互连。因此,它很好地准备发挥广泛的和综合性的作用,在视觉感知和记忆功能域的腹侧通路。对从事被动注视和行为任务的猴子进行的神经生理学研究表明,V4反应是通过调谐由视觉刺激的形式、纹理、颜色、深度和其他属性定义的高维刺激空间来决定的。这种高维调谐可能是视觉皮层中基于对象的表征发展的基础,这些表征对于跟踪,识别和与对象交互至关重要。神经生理学和病变研究也表明,V4反应是重要的指导知觉决策和高阶行为。
Area V4-the focus of this review-is a mid-level processing stage along the ventral visual pathway of the macaque monkey. V4 is extensively interconnected with other visual cortical areas along the ventral and dorsal visual streams, with frontal cortical areas, and with several subcortical structures. Thus, it is well poised to play a broad and integrative role in visual perception and recognition-the functional domain of the ventral pathway. Neurophysiological studies in monkeys engaged in passive fixation and behavioral tasks suggest that V4 responses are dictated by tuning in a high-dimensional stimulus space defined by form, texture, color, depth, and other attributes of visual stimuli. This high-dimensional tuning may underlie the development of object-based representations in the visual cortex that are critical for tracking, recognizing, and interacting with objects. Neurophysiological and lesion studies also suggest that V4 responses are important for guiding perceptual decisions and higher-order behavior.
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