A common neuronal code for perceptual visual cortex? Comparing choice and processes in attentional correlates in V5/MT
A common neuronal code for perceptual visual cortex? Comparing choice and processes in attentional correlates in V5/MT
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DOI：
10.1098/rstb.2003.1415
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发表时间：
2004-06-29
影响因子：
6.3
通讯作者：
Krug, K
中科院分区：
文献类型：
--
作者：
Krug, K
在过去的二十年里，感觉神经科学已经从描述大脑皮层对外部刺激的反应特性转移到建立神经元活动和感觉感知之间的联系。Newsome，Movshon及其同事在清醒行为猕猴中进行的开创性研究将纹外区V5/MT中的单细胞与运动感知紧密联系起来。十年后，纹外视皮层似乎充斥着与许多不同感知任务相关的神经元。例如注意信号、模糊图像的选择信号、双眼竞争的相关信号、立体和形状感知等，这些不同的范式旨在阐明感知过程的神经元代码，但很少有人研究它们如何直接比较甚至相互作用。在本文中，我探讨在何种程度上测量的神经元信号在V5/MT的选择和注意范式可能反映了一个共同的神经元机制的视觉感知。
In the past two decades, sensory neuroscience has moved from describing response properties to external stimuli in cerebral cortex to establishing connections between neuronal activity and sensory perception. The seminal studies by Newsome, Movshon and colleagues in the awake behaving macaque firmly link single cells in extrastriate area V5/MT and perception of motion. A decade later, extrastriate visual cortex appears awash with neuronal correlates for many different perceptual tasks. Examples are attentional signals, choice signals for ambiguous images, correlates for binocular rivalry, stereo and shape perception, and so on. These diverse paradigms are aimed at elucidating the neuronal code for perceptual processes, but it has been little studied how they directly compare or even interact. In this paper, I explore to what degree the measured neuronal signals in V5/MT for choice and attentional paradigms might reflect a common neuronal mechanism for visual perception.