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151 results
  • Balint syndrome (chronic visual-spatial disorder) presenting without known cause. [Case Reports]
    Radiol Case Rep 2018; 13(6):1242-1245Ghoneim A, Pollard C, … Jampana R
  • Balint's syndrome is a rare disorder characterized by a triad of simultanagnosia, optic apraxia, and ocular apraxia. The syndrome manifests when there is an injury to the posterior parietal and occipital lobes and is often bilateral. Several causes of this syndrome were published in the literature, such as trauma, infarctions, infections, tumors, and pre-eclampsia. It can also be the presenting f…
  • StatPearls: Agnosia [BOOK]
    StatPearls Publishing: Treasure Island (FL) Kumar Anil A Great Plains Health Wroten Michael M Medstar Georgetown University BOOK
  • Agnosia is a rare disorder whereby a patient is unable to recognize and identify objects, persons, or sounds using one or more of their senses despite otherwise normally functioning senses. The deficit cannot be explained by memory, attention, language problems, or unfamiliarity to the stimuli. Usually, one of the sensory modalities is affected. For example, a patient with agnosia may not be able…
  • Bilateral parietal dysfunctions and disconnections in simultanagnosia and Bálint syndrome. [Historical Article]
    Handb Clin Neurol 2018; 151:249-267Chechlacz M
  • In 1909 Rezsö Bálint published an extraordinary case study of a man with complex visuospatial deficits resulting from bilateral parietal lesions. Despite some controversies over the nature of reported symptoms, in 1954 Hecaen and Ajuriaguerra conceived the term "Bálint syndrome," not only to honor Bálint's influential work but to firmly conceptualize this striking neurologic disorder. Nowadays it…
  • Gerstmann's syndrome and unilateral optic ataxia in the emergency department. [Case Reports]
    Dement Neuropsychol 2017 Oct-Dec; 11(4):459-461Barbosa BJAP, de Brito MH, … Parmera JB
  • A 75-year-old right-handed woman presented to the emergency department with simultanagnosia and right unilateral optic ataxia. Moreover, the patient had agraphia, acalculia, digital agnosia and right-left disorientation, consistent with complete Gerstmann's syndrome. This case highlights the concurrence of Gerstmann's syndrome and unilateral optic ataxia in the acute phase of a left middle cerebr…
  • The Visual Agnosias and Related Disorders. [Journal Article]
    J Neuroophthalmol 2018; 38(3):379-392Haque S, Vaphiades MS, Lueck CJ
  • CONCLUSIONS: There has been considerable progress in the understanding of how the extrastriate visual cortex is organized, specifically in relation to functionally specialized visual areas. This permits a better understanding of the individual visual agnosias resulting from damage to these areas.
  • Visual Dysfunction in Posterior Cortical Atrophy. [Review]
    Front Neurol 2017; 8:389Maia da Silva MN, Millington RS, … Plant GT
  • Posterior cortical atrophy (PCA) is a syndromic diagnosis. It is characterized by progressive impairment of higher (cortical) visual function with imaging evidence of degeneration affecting the occipital, parietal, and posterior temporal lobes bilaterally. Most cases will prove to have Alzheimer pathology. The aim of this review is to summarize the development of the concept of this disorder sinc…
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