Skip to main content
Log in

Mechanisms of seizure propagation in a cortical model

  • Published:
Journal of Computational Neuroscience Aims and scope Submit manuscript

Abstract

We consider a mathematical model of mesoscopic human cortical ictal electrical activity. We compare the model results with ictal electrocortical data recorded from three human subjects and show how the two agree. We determine that, in the model system, seizures result from increased connectivity between excitatory and inhibitory cell populations, or from decreased connectivity within either excitatory or inhibitory cell populations. We compare the model results with the disinhibition and 4-AP models of epilepsy and suggest how the model may guide the development of new anticonvulsant therapies.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  • Arellano JI, Munoz A, Ballesteros-Yanez I, Sola RG, DeFelipe J (2004) Histopathology and reorganization of chandelier cells in the human epileptic sclerotic hippocampus. Brain. 127: 45–64.

    Google Scholar 

  • Bekenstein JW, Lothman EW (1993) Dormancy of inhibitory interneurons in a model of temporal lobe epilepsy. Science. 259: 97–100.

    Google Scholar 

  • Bernard C, Esclapez M, Hirsch J, Ben-Ari Y (1998) Interneurones are not so dormant in temporal lobe epilepsy: A critical reappraisal of the dormant basket cell hypothesis. Epilepsy Res. 32: 93–103.

    Google Scholar 

  • DeFelipe J (1999) Chandelier cells and epilepsy. Brain. 122: 1807–1822.

    Google Scholar 

  • Dichter MA (2006) Models of epileptogenesis in adult animals available for antiepileptogenesis drug screening. Epilepsy Res. 68: 31–35.

    Google Scholar 

  • Dzhala VI, Staley KJ (2003) Transition from interictal to ictal activity in limbic networks in vitro. J. Neurosci. 23: 7873–7880.

    Google Scholar 

  • Freeman WJ (1964) A linear distributed feedback model for prepyriform cortex. Exp. Neurol. 10: 525–547.

    Google Scholar 

  • Fujiwara-Tsukamoto Y, Isomura Y, Kaneda K, Takada M (2004) Synaptic interactions between pyramidal cells and interneurone subtypes during seizure-like activity in the rat hippocampus. J. Physiol. 557: 961–979.

    Google Scholar 

  • Gotman J (2003) Noninvasive methods for evaluating the localization and propagation of epileptic activity. Epilepsia. 44: 21–29.

    Google Scholar 

  • http://www.epilepsyfoundation.org/ (2005) Epilepsy: An introduction

  • Kramer MA (2005) Nonlinear dynamics and neural systems: synchronization and modeling. Doctoral dissertation, University of California, Berkeley

  • Kramer MA, Kirsch HE, Szeri AJ (2005) Pathological pattern formation and cortical propagation of epileptic seizures. J. R. Soc. Interface. 2: 113–127.

    Google Scholar 

  • Kramer MA, Lopour BA, Kirsch HE, Szeri AJ (2006) Bifurcation control of a seizing human cortex. Phys. Rev. E. 73: 041928.

    Google Scholar 

  • Krimer LS, Zaitsev AV, Czanner G, Kroner S, Gonzalez-Burgos G, Povysheva NV, Iyengar S, Barrionuevo G, Lewis DA (2005) Cluster analysis-based physiological classification and morphological properties of inhibitory neurons in layers 2–3 of monkey dorsolateral prefrontal cortex. J. Neurophysiol. 94: 3009–3022.

    Google Scholar 

  • Liley DTJ, Cadusch PJ, Dafilis MP (2002) A spatially continuous mean field theory of electrocortical activity. Network: Comput. Neural. Syst. 13: 67–113.

    Google Scholar 

  • Mountcastle V (1997) The columnar organization of the neocortex. Brain. 120: 701–722.

    Google Scholar 

  • Murakami S, Zhang T, Hirose A, Okada YC (2002) Physiological origins of evoked magnetic fields and extracellular field potentials produced by guinea-pig CA3 hippocampal slices. J. Physiol-London. 544: 237–251.

    Google Scholar 

  • Netoff TI, Schiff SJ (2002) Decreased neuronal synchronization during experimental seizures. J. Neurosci. 15: 7297–7307.

    Google Scholar 

  • Nowak LG, James AC, Bullier J (1997) Corticocortical connections between visual areas 17 and 18a of the rat studied in vitro: spatial and temporal organisation of functional synaptic responses. Exp. Brain. Res. 117: 219–241.

    Google Scholar 

  • Nunez PL, Cutillo BA (eds) (1995) Neocortical dynamics and human EEG rhythms. Oxford University Press, New York.

  • Rutecki PA, Lebeda FJ, Johnston D (1987) 4-Aminopyridine produces epileptiform activity in hippocampus and enhances synaptic excitation and inhibition. J. Neurophysiol. 57: 1911–1924.

    Google Scholar 

  • Singer W (1993) Synchronization of cortical activity and its putative role in information processing and learning. Annu. Rev. Physiol. 55: 349–374.

    Google Scholar 

  • Steyn-Ross ML, Steyn-Ross DA, Sleigh JW, Whiting DR (2003) Theoretical predictions for spatial covariance of the electroencephalographic signal during the anesthetic-induced phase transition: Increased correlation length and emergence of spatial self-organization. Phys. Rev. E. 68: 021902.

    Google Scholar 

  • Sutherling WW, Barth DS (1989) Neocortical propagation in temporal lobe spike foci on magnetoencephalography and electroencephalography. Ann. Neurol. 25: 373–381.

    Google Scholar 

  • Traub RB, Contreras D, Cunningham MO, Murray H, LeBeau FEN, Bibbig A, Boyd S, Cross H, Baldweg T (2005) Single-column thalamocortical network model exhibiting gamma oscillations, sleep spindles, and epileptogenic bursts. J. Neurophysiol. 93: 2194–2232.

    Google Scholar 

  • Weissinger F, Buchheim K, Siegmund H, Meierkord H (2005) Seizure spread through the life cycle: optical imaging in combined brain slices from immature, adult, and senile rats in vitro. Neurobiol. Dis. 19: 84–95.

    Google Scholar 

  • Wilson HR, Cowan JD (1972) Excitatory and inhibitory interactions in localized populations of model neurons. Biophys. J. 12: 1–24.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Andrew J. Szeri.

Additional information

Action Editor:

T. Sejnowski

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kramer, M.A., Szeri, A.J., Sleigh, J.W. et al. Mechanisms of seizure propagation in a cortical model. J Comput Neurosci 22, 63–80 (2007). https://doi.org/10.1007/s10827-006-9508-5

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10827-006-9508-5

Keywords

Navigation