Effect of realistic human head modelling on brain source distribution

S. Ahn; D. Kim; J. H. Hong; S. C. Jun

doi:10.1049/el.2012.1569

Effect of realistic human head modelling on brain source distribution

S. Ahn, D. Kim, J. H. Hong, S. C. Jun

School of Electronics Engineering

Gwangju Institute of Science and Technology

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The accuracy of the source localisation using EEG measurements depends on the noise as well as the computational model, so the improvement of localisation performance by using a very realistic model is limited. In this reported work, the source localisation effects of various human head models with different geometrical deformation for low signal-to-noise ratio (SNR) measurement are investigated. Assuming the most dense mesh as a model without model mismatch, it was found that some error due to the model mismatch was tolerably small in the range of low SNRs less than 0dB. This provides a cost-effective strategy of head model generation, depending on a given tolerable level of localisation error.

Original language	English
Pages (from-to)	1095-1097
Number of pages	3
Journal	Electronics Letters
Volume	48
Issue number	18
DOIs	https://doi.org/10.1049/el.2012.1569
State	Published - 30 Aug 2012

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10.1049/el.2012.1569

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AB - The accuracy of the source localisation using EEG measurements depends on the noise as well as the computational model, so the improvement of localisation performance by using a very realistic model is limited. In this reported work, the source localisation effects of various human head models with different geometrical deformation for low signal-to-noise ratio (SNR) measurement are investigated. Assuming the most dense mesh as a model without model mismatch, it was found that some error due to the model mismatch was tolerably small in the range of low SNRs less than 0dB. This provides a cost-effective strategy of head model generation, depending on a given tolerable level of localisation error.

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Effect of realistic human head modelling on brain source distribution

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