Title :
Network modeling of epileptic seizure genesis in hippocampus
Author :
Raiesdana, Somayeh ; Golpayegani, S.M.R.H. ; Firoozabadi, S. Mohammad P.
Author_Institution :
Qazvin Branch, Islamic Azad Univ., Qazvin, Iran
fDate :
April 29 2009-May 2 2009
Abstract :
The aim of this paper is to introduce an epileptic seizure model to predict how the whole dynamic of neural firing evolves with a changing in the ratio of inhibitory to excitatory synapses in a network of definite ensemble with random connections. The model is proposed for hippocampus network which is the focus of seizure in temporal lobe epilepsy. As it was proven experimentally, strong neuronal excitatory connectivity with weak inhibitory synapses lead to hyperexcitability and hypersynchronous firing of neurons. Simulation of this hallmark throughout this paper shows a transition from asynchronized firing to synchronized bursting behavior which is confirmed by synchronization measure delta.
Keywords :
cellular biophysics; diseases; neurophysiology; physiological models; synchronisation; asynchronized firing; epileptic seizure genesis; excitatory synapses; hippocampus; hyperexcitability; hypersynchronous neuron firing; network modeling; neural firing; neuronal excitatory connectivity; synchronized bursting behavior; temporal lobe epilepsy; Biological neural networks; Brain modeling; Chaos; Epilepsy; Frequency synchronization; Hippocampus; Mathematical model; Neural engineering; Neurons; Switches;
Conference_Titel :
Neural Engineering, 2009. NER '09. 4th International IEEE/EMBS Conference on
Conference_Location :
Antalya
Print_ISBN :
978-1-4244-2072-8
Electronic_ISBN :
978-1-4244-2073-5
DOI :
10.1109/NER.2009.5109379