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Your search keyword '"Soo Yeol Lee"' showing total 5 results
Start Over Author "Soo Yeol Lee" Journal ieee transactions on magnetics
5 results on '"Soo Yeol Lee"'

1. A New Neuronal Electrical Source Model Considering Electrophysiology to Simulate Realistic Electroencephalography (EEG) Forward Signals

Author

Chang-Hwan Im, Chany Lee, Hyun-Kyo Jung, and Soo Yeol Lee

Subjects
Quantitative Biology::Neurons and Cognition, medicine.diagnostic_test, Computer science, business.industry, Physics::Medical Physics, Activation function, Pattern recognition, Electroencephalography, Neurophysiology, Inverse problem, Electronic, Optical and Magnetic Materials, Electrophysiology, medicine, Waveform, Point (geometry), Artificial intelligence, Electrical and Electronic Engineering, business
Abstract

The present study proposes a new neuronal electrical source model to simulate electroencephalography (EEG) forward signals more effectively. Contrary to the conventional methods which used a presumed activation function at cortical patches or point dipolar sources, the proposed model reflects electrophysiological facts and introduces probability concept, resulting in more plausible and readily controllable artificial EEG waveforms.

Published
2008

2. Precise Estimation of Brain Electrical Sources Using Anatomically Constrained Area Source (ACAS) Localization

Author

Chany Lee, Chang-Hwan Im, Hyun-Kyo Jung, Ki-Young Jung, Kwang-Ok An, and Soo Yeol Lee

Subjects
medicine.diagnostic_test, Computer science, business.industry, Pattern recognition, Magnetoencephalography, Electroencephalography, medicine.disease, Electronic, Optical and Magnetic Materials, Epilepsy, Area source, medicine, Cortical surface, Artificial intelligence, Electrical and Electronic Engineering, business, Parametric statistics
Abstract

This paper proposes a new parametric source model to precisely estimate brain electrical source distribution from electroencephalogram (EEG) or magnetoencephalogram recordings. In the proposed approach, only four free parameters need to be evaluated for each anatomically constrained area source to express both spatial locations and extensions of brain electrical activities on cortical surface. The feasibility of the proposed model is verified through the applications to realistic EEG simulations and epilepsy patient's data

Published
2007

3. Reconstruction of Continuous and Focalized Brain Functional Source Images From Electroencephalography

Author

Kwang-Ok An, Soo Yeol Lee, Hyun-Kyo Jung, Chang-Hwan Im, and Ki-Young Jung

Subjects
Epilepsy, medicine.diagnostic_test, Underdetermined system, Computer science, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, medicine, Iterative reconstruction, Electrical and Electronic Engineering, Electroencephalography, Inverse problem, medicine.disease, Algorithm, Electronic, Optical and Magnetic Materials
Abstract

In this paper, a new hybrid approach to reconstruct more accurate brain functional source images from electroencephalography is proposed. The proposed approach combines extended source model and focal underdetermined system solution algorithm. Feasibility studies with realistic simulation data and the epilepsy patient's data demonstrate that continuous, as well as focalized, brain electrical source images can be reconstructed utilizing the proposed approach

Published
2007

4. Precise Estimation of Brain Electrical Sources Using Anatomically Constrained Area Source (ACAS) Localization.

Author

Chang-Hwan Im, Chany Lee, Kwang-Ok An, Hyun-Kyo Jung, Ki-Young Jung, and Soo Yeol Lee

Subjects
ELECTROENCEPHALOGRAPHY, MAGNETOENCEPHALOGRAPHY, MEDICAL imaging systems, ELECTRIC currents, SIMULATION methods & models, PEOPLE with epilepsy
Abstract

This paper proposes a new parametric source model to precisely estimate brain electrical source distribution from electroencephalogram (EEG) or magnetoencephalogram recordings. In the proposed approach, only four free parameters need to be evaluated for each anatomically constrained area source to express both spatial locations and extensions of brain electrical activities on cortical surface. The feasibility of the proposed model is verified through the applications to realistic EEG simulations and epilepsy patient's data. [ABSTRACT FROM AUTHOR]

Published
2007
Full Text
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5. Reconstruction of Continuous and Focalized Brain Functional Source Images From Electroencephalography.

Author

Chang-Hwan Im, Hyun-Kyo Jung, Ki-Young Jung, and Soo Yeol Lee

Subjects
ELECTROENCEPHALOGRAPHY, ELECTRIC currents, ALGORITHMS, SMOOTHING (Numerical analysis), PEOPLE with epilepsy, FEASIBILITY studies
Abstract

In this paper, a new hybrid approach to reconstruct more accurate brain functional source images from electroencephalography is proposed. The proposed approach combines extended source model and focal underdetermined system solution algorithm. Feasibility studies with realistic simulation data and the epilepsy patient's data demonstrate that continuous, as well as focalized, brain electrical source images can be reconstructed utilizing the proposed approach. [ABSTRACT FROM AUTHOR]

Published
2007
Full Text
View/download PDF

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