The representation of the visual field in the occipital striate cortex

The representation of the visual field in the occipital striate cortex
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枕叶纹状皮层视野的表征

DOI:
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发表时间:
2002
期刊:
影响因子:
--
通讯作者:
B. Condon
B. Condon
中科院分区:
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文献类型:
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作者:
R. Mcfadzean;D. Hadley;B. Condon

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在上个世纪的大部分时间里,传统的Holmes关于枕叶纹状皮质对视野的表征的观点被普遍接受,然而,随着详细的脑成像技术的出现,在过去的十年里,人们对这一观点进行了重新评估。特别是,霍顿和霍伊特提出了一个修正的表征假设,增加了中央10°的表征。然而,仍然存在争议,首先,整个枕纹皮层的整个视野的精确表示,其次,黄斑或中央凹视觉(单侧或双侧)的表示。这些问题已经通过在非人类灵长类动物中的实验研究、在人类中的周边缺陷与脑成像异常的相关性的临床病变研究以及在健康志愿者中的功能成像研究来解决。最近,更复杂的周边技术与注视眼球运动的监测,允许更详细地了解人类的黄斑/中央凹表示。历史回顾将与当前的概念进行对比,并与最近的功能成像研究进行比较。
The traditional Holmes’ view of the representation of the visual field in the occipital striate cortex was universally accepted for most of the last century.However, following the advent of detailed brain imaging, a reappraisal has taken place during the past decade. In particular, Horton and Hoyt have proposed a revised representation hypothesis with an increased representation of the central 10°. Nevertheless, controversies remain concerning firstly, the precise representation of the entire visual field throughout the occipital striate cortex, and secondly, the representation of macular or foveal vision (unilateral or bilateral). These issues have been addressed through experimental studies in non-human primates, clinical lesional studies in humans with correlation of perimetric deficits to brain-imaging abnormalities, and functional imaging studies in healthy volunteers. Recently, more sophisticated perimetric techniques with monitoring of fixational eye movements have allowed more detailed understanding of the macular/foveal representation in humans. An historical review will be contrasted with current concepts and compared with recent functional imaging studies.
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