Reorganization of Retinotopic Maps after Occipital Lobe Infarction
نویسندگان
چکیده
منابع مشابه
Reorganization of Retinotopic Maps after Occipital Lobe Infarction
We studied patient JS, who had a right occipital infarct that encroached on visual areas V1, V2v, and VP. When tested psychophysically, he was very impaired at detecting the direction of motion in random dot displays where a variable proportion of dots moving in one direction (signal) were embedded in masking motion noise (noise dots). The impairment on this motion coherence task was especially...
متن کاملHuman V4 and ventral occipital retinotopic maps.
The ventral surface of the human occipital lobe contains multiple retinotopic maps. The most posterior of these maps is considered a potential homolog of macaque V4, and referred to as human V4 ("hV4"). The location of the hV4 map, its retinotopic organization, its role in visual encoding, and the cortical areas it borders have been the subject of considerable investigation and debate over the ...
متن کاملDelayed Hemichorea Following Temporal–Occipital Lobe Infarction
The presence of hemichorea associated with a lesion in the cortex is exceedingly rare. We report a case of a 62-year-old female who developed delayed left hemichorea after an ischemic infarct in the right temporal–occipital lobe. This case is unique because of the location of infarct and expands our knowledge of hemichorea arising after an ischemic stroke. A 62-year-old female patient was initi...
متن کاملReorganization of retinotopic cortical maps in adult mammals after lesions of the retina.
The organization of the visual cortex has been considered to be highly stable in adult mammals. However, 5 degrees to 10 degrees lesions of the retina in the contralateral eye markedly altered the systematic representations of the retina in primary and secondary visual cortex when matched inputs from the ipsilateral eye were also removed. Cortical neurons that normally have receptive fields in ...
متن کاملRecovery of visual-field defects after occipital lobe infarction: a perimetric study.
OBJECTIVE To assess the temporal course of homonymous visual-field defects due to occipital lobe infarction, by using automated perimetry. METHODS 32 patients with ischaemic infarction of the occipital lobe were studied prospectively, using a Humphrey Visual Field Analyser II. The visual field of each eye was divided into central, paracentral and peripheral zones. The mean visual sensitivity ...
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ژورنال
عنوان ژورنال: Journal of Cognitive Neuroscience
سال: 2014
ISSN: 0898-929X,1530-8898
DOI: 10.1162/jocn_a_00538