Simultagnosia entities

It is the lack of ability to perceive more than a single object at a time. For example, when provided with a picture of a forest with trees, they are unable to see the forest, although they can see each individual tree. Because of their attentional visual deficit, they can appear to be functionally blind and will have difficulty reading and counting because these activities require viewing more than one object at a time. It further classifies as dorsal and ventral types. In the dorsal variant, the lesion is postulated to be in the bilateral parietal lobes, and the patient is often unable to see more than one object at a time. In the ventral type, the lesion is postulated to be in the left inferior occipitotemporal lobe, and the patient has a slower visual processing speed and is unable to identify individual parts of a multi-part object.