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

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 neg...

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Bibliographic Details
Published in:Neurocase 2005-10, Vol.11 (5), p.310-318
Main Authors: Chung Park, Key, Jeong, Yong, Hwa Lee, Byung, Kim, Eun-Joo, Moon Kim, Gyung, Heilman, Kenneth M., Na, Duk L.
Format: Article
Language:English
Subjects:
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
Occipital Lobe - pathology
Parietal Lobe - diagnostic imaging
Parietal Lobe - pathology
Perceptual Disorders - pathology
Perceptual Disorders - physiopathology
Psychomotor Performance - physiology
Tomography, Emission-Computed, Single-Photon - methods
Visual Perception - physiology
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Summary: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.
ISSN:1355-4794
1465-3656
DOI:10.1080/13554790591006177