Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1988-5-17
pubmed:abstractText
Central blindness in a 3.5-year-old crossbred steer was evaluated by electrodiagnostic techniques. When admitted the steer was depressed, head pressed, and circled to the left. Ptosis and absence of menace response were seen with the right eye, while the left eye was normal; direct and consensual pupillary light responses were normal in both eyes. Brainstem auditory evoked potentials and electroretinograms were essentially normal. The flash visual evoked potential (VEP) was greatly reduced upon stimulation of the right eye, while no VEP peaks could be recognized after flash stimuli were presented to the left eye. The amplitude of the electroencephalogram was depressed over right occipital cortex. Multiple brain abscesses were detected on postmortem examination adjacent to the left thalamus, in the left caudal cerebrum, and right frontal cerebrum. Corynebacterium pyogenes was cultured from abscess exudate; however, no origin for the infection could be determined. Both eyes were microscopically normal. The thalamic abscesses were postulated to have produced the EEG depression. Correlations between the VEP abnormalities and the abscess locations are discussed, based on proposed central nervous system generators of the VEP.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0010-8901
pubmed:author
pubmed:issnType
Print
pubmed:volume
77
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
374-82
pubmed:dateRevised
2009-11-11
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Evoked potential and electroencephalographic assessment of central blindness due to brain abscesses in a steer.
pubmed:affiliation
Department of Veterinary Physiology, Pharmacology and Toxicology, School of Veterinary Medicine, Louisiana State University, Baton Rouge 70803.
pubmed:publicationType
Journal Article, Case Reports