A new primary visual cortex
نویسندگان
چکیده
منابع مشابه
A new view of the primary visual cortex
The primary visual cortex (V1) is a fascinating part of the brain. The reason for the fascination is because V1 is tied to the visual world through its relatively strong driving from the retina through the lateral geniculate nucleus (LGN), but it is also part of the cerebral cortex. The function of the cerebral cortex is a major challenge to science. It is one of the most important neural netwo...
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The primary visual cortex (V1) is probably the best characterized area of primate cortex, but whether this region contributes directly to conscious visual experience is controversial. Early neurophysiological and neuroimaging studies found that visual awareness was best correlated with neural activity in extrastriate visual areas, but recent studies have found similarly powerful effects in V1. ...
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I propose that pre-attentive computational mechanisms in primary visual cortex create a saliency map. This map awards higher responses to more salient image locations; these responses are those of conventional V1 cells tuned to input features, such as orientation and color. Hence no separate feature maps, or any subsequent combination of them, is needed to create a saliency map. I use a model t...
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The neuropsychological phenomenon of blindsight has been taken to suggest that the primary visual cortex (V1) plays a unique role in visual awareness, and that extrastriate activation needs to be fed back to V1 in order for the content of that activation to be consciously perceived. The aim of this review is to evaluate this theoretical framework and to revisit its key tenets. Firstly, is blind...
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ژورنال
عنوان ژورنال: Science
سال: 2020
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.abe1482