visualization meaning

Blind people have the least developed visual cortex?

I'm just curious if they did not receive the input when the visual cortex visually less developed than that which receives visual information directly? I wonder, because we handle a wide variety of information simultaneously by our vision, and I suppose that the visual elements are imagined it less stressful. So blind people should think of a visual beat less visual cortex, so it's not too need to be developed. Is this true or false? Do they have to compensate the end, by imagining yourself visuals better, because their visual cortex still works even at full speed, no matter what? Imagine visual visualizations with my mind. Thank you very much in advance.

….. Your assumption is correct. If a person is blind from birth, will not promote the visual cortex during the critical phase of development in childhood, when to prune neurons fallow in order to ensure that most of the neurons used. A blind man would have left small neurons after pruning. And over the bark is used, the more it is stimulated by the nerves to prepare for the establishment of memory and processor design. That means many more dendrites in addition to establishing the necessary links. Lack of use means that no dendritic Growth. The end result is an occipital region much less developed. But this is only part of the brain. Other areas of the brain would develop normally. Even the brain has "plasticity" If necessary, a brain area for anything other than their use to practice. Some blind people can develop and use their visual cortex to other functions, if necessary.

Jeni Wightman’s ‘Visualizing Meaning’

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