Document Detail


Fast method for the localisation of current dipoles in the human brain.
MedLine Citation:
PMID:  11804175     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A fast algorithm for localising multiple current dipoles in the human brain by measuring the external magnetic field is presented. A genetic algorithm is used first for rough estimate of locations. To speed up the global optimisation algorithm, an explicit solution for a spherical head model is used for the rough estimation. This rough estimate is then used as a start for a fine search using a gradient-based algorithm, in which a boundary element solution for a realistic brain-shaped head model is used. Numerical simulation indicates that the present algorithm converges three-four times faster than an algorithm using a brain-shaped head model in all the steps.
Authors:
J Li; H Zhu; S He
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Medical & biological engineering & computing     Volume:  39     ISSN:  0140-0118     ISO Abbreviation:  Med Biol Eng Comput     Publication Date:  2001 Nov 
Date Detail:
Created Date:  2002-01-23     Completed Date:  2002-02-15     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7704869     Medline TA:  Med Biol Eng Comput     Country:  England    
Other Details:
Languages:  eng     Pagination:  678-80     Citation Subset:  IM    
Affiliation:
State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, People's Republic of China. lijun@coer.zju.edu.cn
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MeSH Terms
Descriptor/Qualifier:
Algorithms
Brain / physiology*
Brain Mapping / methods*
Electrophysiology
Humans
Magnetoencephalography / methods*
Models, Anatomic

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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