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Articles 61 - 62 of 62
Full-Text Articles in Nervous System
The Influence Of Slow Calcium-Activated Potassium Channels On Epileptiform Activity In A Neuronal Model Of Pyramidal Cells, Keun-Hang Susan Yang, Piotr J. Franaszczuk, Gregory K. Bergey
The Influence Of Slow Calcium-Activated Potassium Channels On Epileptiform Activity In A Neuronal Model Of Pyramidal Cells, Keun-Hang Susan Yang, Piotr J. Franaszczuk, Gregory K. Bergey
Mathematics, Physics, and Computer Science Faculty Articles and Research
An imbalance between excitation and inhibition can play an important role in the generation of epileptiform activity. Experimental evidence indicates that alterations of either synaptic activity or intrinsic membrane properties may contribute to this imbalance. The slow Ca2+ - activated K+ currents (sIAHP) limit neuronal firing rate and excitability and are therefore of great interest for their potential role in epileptogenesis. The sIAHP is found in both excitatory and inhibitory neurons, and its effect on these neurons can influence the network behavior. Simulations show that the increased excitability caused by reduction of inhibition by the sIAHP for inhibitory interneuron generates …
The Effect Of Changes In The Inhibitory Interneuron Connectivity On The Pattern Of Bursting Behavior In A Pyramidal Cell Model, Keun-Hang Susan Yang, Piotr J. Franaszczuk, Gregory K. Bergey
The Effect Of Changes In The Inhibitory Interneuron Connectivity On The Pattern Of Bursting Behavior In A Pyramidal Cell Model, Keun-Hang Susan Yang, Piotr J. Franaszczuk, Gregory K. Bergey
Mathematics, Physics, and Computer Science Faculty Articles and Research
Inhibitory interneurons play crucial roles in the regulation of patterns of activity in the hippocampus, and some types are thought to be vulnerable in epilepsy. The connections between excitatory and inhibitory synapses are important for generation of bursting activity in pyramidal neurons. The present study investigates the influences of changes in the connectivity of interneurons on the patterns of bursting in several excitatory connections using a multicompartmental pyramidal cell model. Simulations show that bursting activity depends upon changes in the connectivity of the inhibitory interneuron, and the location of the inhibitory synapses on excitatory neurons.