Right hemifield alexia without hemianopia.

A Castro-Caldas; V Salgado

doi:10.1001/archneur.1984.04050130090031

Home/Archive/PubMed

PubMed · 6689896

Right hemifield alexia without hemianopia.

A Castro-Caldas·V Salgado

View original source ↗Export metadata ↓

Abstract

We studied a 54-year-old man who suffered a stroke in the visual-association areas of the left hemisphere. He showed no right-sided visual field defect and results of a neuropsychologic examination were normal except for his performance in several tasks presented to the right visual field. Naming of drawings was normal in both hemifields but reading of letters, words, digits, and arithmetic symbols was defective in the right field. We believe that the lesion in the visual association areas of the left hemisphere that did not interrupt interhemispheric connections disconnected the primary visual areas from temporoparietal areas of the left hemisphere, affecting reading.

Explore related subjects

Cerebrovascular Disorders Corpus Callosum Dyslexia, Acquired Functional Laterality Hemianopsia Humans Male Middle Aged Reading Tomography, X-Ray Computed Visual Cortex Visual Field Tests Visual Fields Case Reports Journal Article Research Support, Non-U.S. Gov't

Keep this discovery

Explore connections, maps & timelines

BibTeX RIS

A Castro-Caldas, V Salgado. 1984. Right hemifield alexia without hemianopia.. https://doi.org/10.1001/archneur.1984.04050130090031

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed1997

Recovery from subcortical stroke--PET activation patterns in patients compared with healthy subjects.

The results of experiments with noninvasive monitoring techniques give us ideas about strategies used by the brain during recovery of function. They have their limitations, however, in that they do not allow us to work out underlying mechanism for such recovery. This can only be done by exact physiologic investigations, which can be performed most rigorously in monkeys or other animals. We hope that advances in comparative anatomy and physiology between different primates, including humans, will allow us to combine our knowledge about functional changes in the brain with more fundamental knowledge about their mechanisms. In the future this knowledge may indicate in which way such mechanisms can be modulated either pharmacologically or by physiotherapy to lead to a better outcome for patients.

Cerebrovascular Disorders↗

PubMed1996

Stroke care and rehabilitation.

This article explores the nurse's role in the care and rehabilitation of patients who have had a stroke. It relates to UKCC Professional Development categories: Care enhancement and Patient, family, client and colleague support.

Cerebrovascular Disorders↗

PubMed1996

Design, synthesis, and in vitro evaluation of cyclic nitrones as free radical traps for the treatment of stroke.

Analogs of the cyclic nitrone free radical trap 1 (3,3-dimethyl-3,4-dihydroisoquinoline N-oxide, a cyclic analog of phenyl-tert-butylnitrone (PBN)) were prepared in which (1) the fused phenyl ring was replaced with a naphthalene ring, an electron rich heterocycle, or a dimethylphenol, (2) the nitrone-containing ring comprised five, six, or seven atoms, and (3) the gem-dimethyl group was replaced with spirocyclic groups. The most active antioxidant, which bears a dimethylphenol fused to a 7-membered ring nitrone (compound 6h), inhibited lipid peroxidation in vitro with an IC50 of 22 microM, a 75-fold improvement over that of 1. The previously observed correlation between lipophilicity and activity vs lipid peroxidation in vitro has been further substantiated and refined by this study. Moreover, certain classes of compounds (namely, dimethylphenols 6g,h and furan 6j) have now been found which are considerably more active in vitro than expected on the basis of their log k'(w) values.

Cerebrovascular Disorders↗