Systematic review on the role of acquired brain damage in visuospatial perceptual deficits distinct from neglect

Visuospatial perceptual deficits refer to the inability to recognize faces or common objects or to find those in direct view despite good acuity, beyond this, it is thought to arise due to disturbances which include cerebrovascular accidents, tumor, carbon monoxide poisoning, closed head injury, and central nervous system infections. We will be revolving around three disorders which are included in the array of visuospatial perceptual deficits, specifically metamorphopsia, hemimicropsia and hyperschematia and how such deficits could arise due to acquired neurological injuries. The patients, aged 35-73, will be further elaborated on, by systematically reporting information such as their medical history, the symptoms experienced and the locus of brain damage, etc. , in accordance with the deficit experienced out of the earlier mentioned ones. Furthermore, various neuropsychological tasks which have been conducted on the above specified participants will be comprised in well order so as to ensure a clear understanding of their scope. Some examples of included task are line cancellation, line bisection, drawing from memory, perceptual matching, drawing by copy, etc. Moreover, neuroimaging and electrophysiological data will be also discussed, when available. By analysing the results, we will be able to understand the degree of impairment that a person has acquired in certain cognitive abilities due to acquired brain damage, as well as create a broader neuroanatomical portrait for each of those deficits in order to facilitate a possible deepening of the topic in future research, entailing so the main focus of this systematic review.