The simultanagnosia spectrum section explains that the experience of simultanagnosia varies considerably from person to person. This is why we have used the term 'spectrum'.
In order to demonstrate the differences further we have asked some of those affected by simultanagnosia to look at certain images and explain not only what they can see, but what they understand and how it makes them feel.
How would you describe the appearance of what is behind you? Not turning around to see, but looking straight ahead, how do you describe what you can't see?
This has been our challenge in editing the images to illustrate the experience of simultanagnosia.
We have used a blur effect to show visual information that is not available to the person describing their experience. When viewing the edited images, consider the areas that have been 'blurred out' as the same experience of visual information that is behind you, where you cannot see.
This is how people with simultanagnosia have described it; they know things are there, in the same way you know that things are behind you, they just can't see them, in the same way you can't see behind you.
For some, particularly those with severe CVI and profound disabilities (CVI Classification 1), they don't know things are 'there', outside of the area they can see, which is why simultanagnosia can be both confusing and frightening. For this reason, we have also noted the CVI Classification for each case study, to help understand further the different priorities and behaviours.
In the following subsections, we have ordered the information in two ways.
The images are:
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