Visual object agnosia and pure word alexia: correlation of functional magnetic resonance imaging and lesion localization
| Autor: | Carmen V. Salvan, Robert W. Prost, John L. Ulmer, Thomas Wascher, Vincent P. Mathews, Edgar A. DeYoe, James W. Lewis |
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| Rok vydání: | 2004 |
| Předmět: |
genetic structures
Breast Neoplasms Brain mapping Temporal lobe Lesion medicine Humans Radiology Nuclear Medicine and imaging Dominance Cerebral Visual agnosia Cerebral Cortex Dyslexia Acquired Brain Mapping medicine.diagnostic_test business.industry Brain Neoplasms Cognitive neuroscience of visual object recognition Magnetic resonance imaging Middle Aged Magnetic Resonance Imaging Temporal Lobe Word recognition Agnosia Visual Perception Female medicine.symptom Functional magnetic resonance imaging business Neuroscience |
| Zdroj: | Journal of computer assisted tomography. 28(1) |
| ISSN: | 0363-8715 |
| Popis: | We present a case of a 64-year-old, right-handed female with a metastatic breast cancer lesion involving the left posterior inferior temporal lobe causing complete loss of the ability to recognize visually common objects and words. After her symptoms resolved on corticosteroid therapy, functional magnetic resonance imaging (fMRI) mapping demonstrated strong left-hemispheric dominance for word recognition and right-hemispheric dominance for object recognition. The case illustrates the relationships among ventral occipito-temporal cortical activation, lesion localization, and lesion-induced deficits of higher visual function. The relationship between hemispheric dominance determined by fMRI and risk of postoperative deficit depends on the specific visual function of interest. |
| Databáze: | OpenAIRE |
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