Magnetoencephalography Source Localization using Improved Simplex Method

被引：0
|
作者：
An, Kwang-Ok [1 ]
Im, Chang-Hwan [2 ]
Jung, Hyun-Kyo [1 ]
机构：
[1] Seoul Natl Univ, Sch Elect Engn, Seoul, South Korea
[2] Yonsei Univ, Dept Biomed Engn, Wonju, South Korea
来源：
WORLD CONGRESS ON MEDICAL PHYSICS AND BIOMEDICAL ENGINEERING 2006, VOL 14, PTS 1-6 | 2007年 / 14卷
关键词：
Equivalent current dipole (ECD); Initial simplex; Magnetoencephalography (MEG); Shaking technique; Simplex method;
D O I：
暂无
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
Simplex method has been used extensively for magnetoencephalography (MEG) source localization problems. Like other deterministic techniques, however, it can be easily trapped in local optima. In this study, some modifications have been made to improve the ability of finding global optima: 1) constructing an initial simplex using sensitivity of variables, 2) considering relationship between variables, and 3) performing a shaking technique based on polynomial interpolation. The efficiency of the proposed method was tested using simulated MEG data. From the simulation results, it is verified that the improved simplex method can yield more reliable inverse solutions than the conventional one.
引用
收藏
页码：2726 / +
页数：2
相关论文
共 50 条
  • [1] Magnetoencephalography source localization using improved simplex method
    An, Kwang-Ok
    Im, Chang-Hwan
    Jung, Hyun-Kyo
    INVERSE PROBLEMS IN SCIENCE AND ENGINEERING, 2008, 16 (04) : 499 - 510
  • [2] Multi-start downhill simplex method for spatio-temporal source localization in magnetoencephalography
    Huang, M
    Aine, CJ
    Supek, S
    Best, E
    Ranken, D
    Flynn, ER
    EVOKED POTENTIALS-ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY, 1998, 108 (01): : 32 - 44
  • [3] Dipole source localization of magnetoencephalography
    Shiraishi, H.
    PROCEEDINGS OF THE 10TH ASIAN & OCEANIAN CONGRESS OF CHILD NEUROLOGY - AOCCN, 2009, : 123 - 127
  • [4] Magnetoencephalography Source Localization Using the Source Affine Image Reconstruction (SAFFIRE) Algorithm
    Popescu, Mihai
    Blunt, Shannon D.
    Chan, Tszping
    IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 2010, 57 (07) : 1652 - 1662
  • [5] IMPROVED ROOTING METHOD FOR SOURCE LOCALIZATION
    MARKS, JA
    BUCKLEY, KM
    IEE PROCEEDINGS-F RADAR AND SIGNAL PROCESSING, 1992, 139 (05) : 321 - 326
  • [6] Source localization in magnetoencephalography to identify epileptogenic foci
    Shiraishi, Hideaki
    BRAIN & DEVELOPMENT, 2011, 33 (03): : 276 - 281
  • [7] Localization of the activity source in the inverse problem of magnetoencephalography
    Zakharova T.V.
    Karpov P.I.
    Bugaevskii V.M.
    Computational Mathematics and Modeling, 2017, 28 (2) : 148 - 157
  • [8] Electroencephalography, magnetoencephalography and source localization: their value in epilepsy
    Megevand, Pierre
    Seeck, Margitta
    CURRENT OPINION IN NEUROLOGY, 2018, 31 (02) : 176 - 183
  • [9] Source space localization technique for magnetoencephalography (MEG) source reconstruction
    Im, CH
    Jung, HK
    Lee, YH
    Kwon, HC
    INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS, 2004, 20 (01) : 29 - 36
  • [10] SOURCE LOCALIZATION OF AUDITORY RESPONSES USING MAGNETOENCEPHALOGRAPHY AND MAGNETIC-RESONANCE-IMAGING
    PAPANICOLAOU, AC
    ROGERS, RL
    BAUMANN, S
    SAYDJARI, C
    EISENBERG, HM
    JOURNAL OF CLINICAL AND EXPERIMENTAL NEUROPSYCHOLOGY, 1990, 12 (01) : 94 - 94
12345