Linked Life Data

8177061

Source:http://linkedlifedata.com/resource/pubmed/id/8177061

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1994-6-7
pubmed:abstractText
Neuronal activity in the brain cortex is replaced by a small current dipole, and hence the localized electric activities of the cortex are well approximated by equivalent current dipoles. Position and moments of these equivalent dipoles are estimated from the scalp potentials. In this analysis, the head as a conductor is divided into three volumes with uniform electric conductivity: Scalp, Skull and Brain tissue; we call this head model the SSB Head Model. The boundary element method is used in solving this problem and reliability of the final result mainly depends on the arrangement of nodal points on the surfaces of these three regions for numerical calculation, the electric conductivity ratios of the three regions in the model, and the number of electrodes. By means of computer simulation we investigated dependence of errors in the estimated dipole position on these factors. It is found that arrangement of nodal points must be decided adaptively depending on the source position.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0026-1270
pubmed:author
pubmed:issnType
Print
pubmed:volume
33
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
120-2
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Source estimation in the human brain from EEG based on the SSB Head Model.
pubmed:affiliation
Brain Function Laboratory, Kawasaki, Japan.
pubmed:publicationType
Journal Article