A model for frequency dependence of conductivities of the live human skull

Massoud Akhtari, H. C. Bryant, D. Emin, W. Merrifield, A. N. Mamelak, E. R. Flynn, J. J. Shih, M. Mandelkern, A. Matlachov, D. M. Ranken, E. D. Best, M. A. DiMauro, R. R. Lee, W. W. Sutherling

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A mathematical model (σ(ω) ≈ Aωα, where, σ≡ conductivity, ω =2πf ≡ applied frequency (Hz), A (amplitude) and α (unitless) ≡ search parameters) was used to fit the frequency dependence of electrical conductivities of compact, spongiosum, and bulk layers of the live and, subsequently, dead human skull samples. The results indicate that the fit of this model to the experimental data is excellent. The ranges of values of A and α were, spongiform (12.0-36.5, 0.0083-0.0549), the top compact (5.02-7.76, -0.137-0.0144), the lower compact (2.31-10.6, 0.0267-0.0452), and the bulk (7.46-10.6, 0.0133-0.0239). The respective values A and α for the respective layers of the dead skull samples were (40.1-89.7, -0.0017-0.0287), (5.53-14.5, -0.0296-0.0061), (4.58-15.9, -0.0226-0.0268), and (12.7-25.3, -0.0158-0.0132).

Original languageEnglish (US)
Pages (from-to)39-55
Number of pages17
JournalBrain Topography
Volume16
Issue number1
DOIs
StatePublished - Sep 2003
Externally publishedYes

Fingerprint

Skull
Theoretical Models
Electric Conductivity

Keywords

  • Conductivity
  • EEG
  • MEG
  • Model
  • Skull

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

Cite this

Akhtari, M., Bryant, H. C., Emin, D., Merrifield, W., Mamelak, A. N., Flynn, E. R., ... Sutherling, W. W. (2003). A model for frequency dependence of conductivities of the live human skull. Brain Topography, 16(1), 39-55. https://doi.org/10.1023/A:1025658432696

A model for frequency dependence of conductivities of the live human skull. / Akhtari, Massoud; Bryant, H. C.; Emin, D.; Merrifield, W.; Mamelak, A. N.; Flynn, E. R.; Shih, J. J.; Mandelkern, M.; Matlachov, A.; Ranken, D. M.; Best, E. D.; DiMauro, M. A.; Lee, R. R.; Sutherling, W. W.

In: Brain Topography, Vol. 16, No. 1, 09.2003, p. 39-55.

Research output: Contribution to journalArticle

Akhtari, M, Bryant, HC, Emin, D, Merrifield, W, Mamelak, AN, Flynn, ER, Shih, JJ, Mandelkern, M, Matlachov, A, Ranken, DM, Best, ED, DiMauro, MA, Lee, RR & Sutherling, WW 2003, 'A model for frequency dependence of conductivities of the live human skull', Brain Topography, vol. 16, no. 1, pp. 39-55. https://doi.org/10.1023/A:1025658432696
Akhtari M, Bryant HC, Emin D, Merrifield W, Mamelak AN, Flynn ER et al. A model for frequency dependence of conductivities of the live human skull. Brain Topography. 2003 Sep;16(1):39-55. https://doi.org/10.1023/A:1025658432696
Akhtari, Massoud ; Bryant, H. C. ; Emin, D. ; Merrifield, W. ; Mamelak, A. N. ; Flynn, E. R. ; Shih, J. J. ; Mandelkern, M. ; Matlachov, A. ; Ranken, D. M. ; Best, E. D. ; DiMauro, M. A. ; Lee, R. R. ; Sutherling, W. W. / A model for frequency dependence of conductivities of the live human skull. In: Brain Topography. 2003 ; Vol. 16, No. 1. pp. 39-55.
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