Linked Life Data

8956968

Source:http://linkedlifedata.com/resource/pubmed/id/8956968

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1997-3-13
pubmed:abstractText
We have demonstrated anatomo-functional correlation of the brain visual function using an MRI-linked whole-head magnetoencephalography system. Visual evoked magnetic fields (VEFs) due to pattern reversal stimuli were measured in seven healthy subjects and 13 patients with intracranial structural lesions. Full-field stimuli evoked the most prominent peak around 100 ms latency (P100m) as a two-dipole pattern over the occipital area in all of the normal subjects and four patients with mild and partial hemianopsia. In five patients with homonymous hemianopsia due to unilateral occipital lesion, a single-dipole pattern of the P100m appeared over the normal occipital area only. In four patients with bitemporal hemianopsia due to pituitary tumors, a single-dipole pattern of the P100m appeared only over the ipsilateral occipital area to the stimulated eye. Using current dipole models, P100m sources were localized at the lateral bottom of the calcarine fissures. Although human occipital lobes are known to be morphologically variable, our results indicate excellent correlation of the cortical anatomy and human visual function. Full-field stimuli, requiring no strict visual fixation, are especially useful for clinical application. A clear two-dipole pattern in the normal VEFs enables us to compare two hemispheric activities.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0921-3775
pubmed:author
pubmed:issnType
Print
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
275-83
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Clinical application of visual evoked fields using an MRI-linked whole head MEG system.
pubmed:affiliation
Department of Neurosurgery, Tohoku University School of Medicine, Sendai, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't