Models and mechanisms of experimental epilepsies.

Abstract:

PURPOSE:To review the value of experimental models of epilepsy to help us understand the underlying basic neuronal mechanisms. METHODS:The methods addressed here include a variety of acute and chronic experimental epilepsies and their investigation in vitro, in vivo, and in computer simulations. RESULTS:Epileptic discharges are emergent properties of neuronal networks, depending crucially on intrinsic neuronal properties, and on the structural and functional organisation of the synaptic networks that interconnect them. Fast oscillations are another emergent property of these networks; while they are involved in normal function, they can play a crucial role in the initiation of at least some kinds of focal seizure. DISCUSSION:Brief "interictal" epileptic events are now relatively well understood. Rather less so are the mechanisms of chronic epileptic foci, and particularly of the prolonged hypersynchronous hyperexcitability characteristic of focal seizures, but here too progress is being made, offering the prospect of better targeted treatments.

journal_name

Epilepsia

journal_title

Epilepsia

authors

Jefferys JG

doi

10.1111/j.0013-9580.2003.12004.x

subject

Has Abstract

pub_date

2003-01-01 00:00:00

pages

44-50

eissn

0013-9580

issn

1528-1167

pii

12004

journal_volume

44 Suppl 12

pub_type

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