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A new search method to solve the magnetoencephalography inverse problem

Zhu Hong-Yi Shen Jian-Qi Li Jun

A new search method to solve the magnetoencephalography inverse problem

Zhu Hong-Yi, Shen Jian-Qi, Li Jun
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  • Abstract views:  2728
  • PDF Downloads:  490
  • Cited By: 0
Publishing process
  • Received Date:  15 April 2003
  • Accepted Date:  26 May 2003
  • Published Online:  15 March 2004

A new search method to solve the magnetoencephalography inverse problem

  • 1. 浙江大学光通讯联合实验室,现代光学仪器国家重点实验室,光及电磁波研究中心,杭州 310027

Abstract: A new search method is presented to solve the magnetoencephalography(MEG) inverse problem in a realistic head model. This method is based on the relationship between the magnetic fields generated by two closely located current dipoles. If we know the magnetic field produced by a current dipole, we can get the magnetic field generated by another current dipole located in somewhere close to it through this relationship. Doing it again and again, we can calculate the magnetic field generated by the dipole located anywhere in the brain, and obtain the difference between the calculated magnetic field and the measured magnetic field. The place where the square of the difference is the least will be the solution to our problem. Compared with boundary element method, this method can get the accurate solution to MEG inverse problem simpler, as well as costing less time.

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