Left hemispatial visual neglect associated with a combined right occipital and splenial lesion: another disconnection syndrome.

Abstract

Damage to the left occipital lobe and the splenium or forceps major is often associated with pure alexia, thought to be an occipital-temporoparietal disconnection syndrome. A patient with the parallel lesion, a combined right occipital and splenial lesion, showed severe left-sided visual spatial neglect, but no significant neglect in other sensory modalities. This visual neglect might be related to a disconnection between the visual information processed by the left occipital lobe and the right posterior temporal-inferior parietal areas that mediate attention in the left hemispace.

• Authors: Key Chung Park, Yong Jeong, Byung Hwa Lee, Eun-Joo Kim, Gyung Moon Kim, Kenneth M Heilman, Duk L Na
• Journal: Neurocase (Neurocase) Vol. 11 Issue 5 Pg. 310-8 (Oct 2005) ISSN: 1355-4794 [Print] England
• PMID: 16251132 (Publication Type: Case Reports, Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)

Topics

• Aged
• Aged, 80 and over
• Brain Mapping
• Female
• Functional Laterality (physiology)
• Humans
• Magnetic Resonance Imaging (methods)
• Male
• Middle Aged
• Neuropsychological Tests (statistics & numerical data)
• Occipital Lobe (diagnostic imaging, pathology)
• Parietal Lobe (diagnostic imaging, pathology)
• Perceptual Disorders (pathology, physiopathology)
• Psychomotor Performance (physiology)
• Tomography, Emission-Computed, Single-Photon (methods)
• Visual Perception (physiology)