| Preface | p. v |
| Bursting at the Single Cell Level | |
| The Development of the Hindmarsh-Rose Model for Bursting | p. 3 |
| Introduction | p. 3 |
| Tail Current Reversal | p. 4 |
| The 1982 Model | p. 5 |
| The 1984 Model | p. 8 |
| Subthreshold Oscillations | p. 10 |
| A Bifurcation Theorem | p. 15 |
| Negative Calcium Feedback: The Road from Chay-Keizer | p. 19 |
| Introduction | p. 19 |
| Before the Beginning | p. 20 |
| The Beginning | p. 24 |
| The Demise of K(Ca) | p. 32 |
| The Return of K(Ca): Help from the Endoplasmic Reticulum | p. 34 |
| Further Modifications to the Model | p. 41 |
| Discussion | p. 43 |
| Autoregulation of Bursting of AVP Neurons of the Rat Hypothalamus | p. 49 |
| Introduction | p. 49 |
| Electrical Properties of AVP Cells | p. 52 |
| Mathematical Model | p. 55 |
| Firing Patterns | p. 58 |
| Burst Structure | p. 58 |
| The Role of Calcium | p. 62 |
| The Action of Dynorphin | p. 62 |
| The Bursting Mechanism | p. 66 |
| The Dynamics of Dynorphin | p. 71 |
| Analysis of Bursting | p. 73 |
| Fast | p. 73 |
| Slow | p. 73 |
| Discussion | p. 81 |
| A dual role for calcium | p. 81 |
| Alternative mechanisms for the plateau potential | p. 81 |
| Excitable bursting | p. 82 |
| Bifurcations in the Fast Dynamics of Neurons: Implications for Bursting | p. 89 |
| Introduction | p. 90 |
| A Two Dimensional Model of Spiking Sodium Currents | p. 91 |
| Fast-Slow Analysis of Bursting | p. 104 |
| Aplysia | p. 106 |
| Thalamic relay neurons | p. 108 |
| Leech heart interneurons | p. 110 |
| Plateau oscillations in leech heart interneurons | p. 112 |
| Neurons of the pre-B&:otzinger complex | p. 113 |
| Discussion | p. 115 |
| Bursting in 2-Compartment Neurons: A Case Study of the Pinsky-Rinzel Model | p. 123 |
| Introduction | p. 123 |
| The Pinsky-Rinzel Model | p. 125 |
| Equations and qualitative description of the complex burst | p. 125 |
| Dynamics of the Pinsky-Rinzel Model | p. 129 |
| Burst initiation | p. 129 |
| Somatic-dendritic ping-pong | p. 133 |
| Morris-Lecar Two-Compartment Models | p. 137 |
| Discussion | p. 140 |
| Ghostbursting: The Role of Active Dendrites in Electrosensory Processing | p. 145 |
| Introduction | p. 145 |
| Bursting Mechanism | p. 146 |
| Ghostburster Dynamics | p. 151 |
| Unique Features | p. 154 |
| Extensions and Other Work | p. 157 |
| Reduced models | p. 158 |
| Periodic forcing | p. 159 |
| Burst excitability | p. 160 |
| Differential modulation of burst discharge | p. 161 |
| Parallel Processing with Bursts and Isolated Spikes | p. 163 |
| Ghostbursting the ghostburster | p. 163 |
| Spike train processing | p. 166 |
| Summary | p. 169 |
| Bursting at the Network Level | |
| Analysis of Circuits Containing Bursting Neurons Using Phase Resetting Curves | p. 175 |
| Introduction | p. 175 |
| Stability Analysis for Two Coupled Oscillators | p. 178 |
| Analysis of a Circuit of Two Model Neurons | p. 181 |
| Stability Analysis for a Three Neuron Ring Circuit | p. 183 |
| Analysis of a Circuit of Three Model Neurons | p. 186 |
| Analysis of a Two Neuron Hybrid Circuit | p. 189 |
| Effect of Changing Burst Durations in the Two Neuron Circuit | p. 191 |
| Phenomenology of Resetting in a Biological Bursting Neuron | p. 193 |
| Significance | p. 195 |
| Bursting in Coupled Cell Systems | p. 201 |
| Introduction | p. 201 |
| Unfolding Theory and Bursting in Fast-Slow Systems | p. 203 |
| Bursting in Two Coupled Cells | p. 205 |
| Z[subscript 2]-Equivariant Bifurcations | p. 207 |
| Pitchfork Bifurcation | p. 209 |
| Hopf/Hopf Mode Interactions | p. 211 |
| Takens-Bogdanov Bifurcation with Z[subscript 2] Symmetry | p. 213 |
| Conclusion | p. 219 |
| Modulatory Effects of Coupling on Bursting Maps | p. 223 |
| Introduction | p. 223 |
| Examples of Bursting Maps | p. 225 |
| One-dimensional maps | p. 225 |
| Two-dimensional maps | p. 226 |
| Effects of Coupling | p. 230 |
| Effects of coupling on one-dimensional maps | p. 230 |
| Effects of coupling on two-dimensional maps | p. 232 |
| Rulkov's First Bursting Map: Explaining the Effect of Coupling | p. 234 |
| Discussion | p. 238 |
| Beyond Synchronization: Modulatory and Emergent Effects of Coupling in Square-Wave Bursting | p. 243 |
| Introduction | p. 243 |
| The Model | p. 245 |
| Effect of Coupling: Identical Cells | p. 247 |
| Effects of coupling on spike patterns | p. 249 |
| Effects of coupling on burst period | p. 251 |
| Normal Form Reduction | p. 254 |
| Identical cells: [Delta] = 1 | p. 255 |
| Stability of the in-phase and anti-phase steady states | p. 256 |
| Non-identical cells: [Delta not equal] 1 | p. 257 |
| Enhancement of the Period Extension with Heterogeneity | p. 258 |
| Emergent Bursting | p. 261 |
| Synaptic Coupling | p. 265 |
| Discussion | p. 267 |
| Limitations and extensions | p. 267 |
| Comparison to other emergent oscillations | p. 269 |
| Bursting in Excitatory Neural Networks | p. 273 |
| Introduction | p. 274 |
| Spontaneous Activity in the Developing Spinal Cord | p. 274 |
| Model of the Spontaneous Activity in the Embryonic Chick Spinal Cord | p. 277 |
| Properties and Applications of the Model | p. 280 |
| Bistability of the excitatory network with fixed synaptic efficacy | p. 280 |
| Episodic and rhythmic behavior due to activity-dependent depression of network excitability | p. 283 |
| Relationship between episode duration and inter-episode interval | p. 287 |
| Recovery of the activity after blockade of excitatory connections | p. 289 |
| Analogy between Network and Cellular Bursting | p. 292 |
| Discussion | p. 294 |
| Bursting activity in neural networks | p. 295 |
| Network vs cellular bursting | p. 296 |
| Oscillatory Bursting Mechanisms in Respiratory Pacemaker Neurons and Networks | p. 303 |
| Introduction | p. 304 |
| Single Cell Dynamics: Evidence, Motivation, and Models | p. 306 |
| Coupling Effects in Two Cells: A Pathway to Larger Populations | p. 312 |
| The Big Bang: Populations of Excitatory Pacemakers | p. 314 |
| Synchronized bursting in a heterogeneous population | p. 314 |
| Dynamic range of network oscillations | p. 316 |
| Emergent rhythms: Pacemakers vs. group pacemakers | p. 317 |
| Dynamic Range of Bursting Activity | p. 318 |
| Fast/slow analysis of a single cell | p. 318 |
| The transition from bursting to spiking in coupled cells with h[subscript 1] = h[subscript 2] | p. 323 |
| The transition from bursting to tonic spiking in the full model for two coupled cells | p. 327 |
| Effects of Heterogeneity | p. 329 |
| Motivation and introduction to modeling approach | p. 329 |
| The role of fast threshold modulation | p. 330 |
| Analysis of a synchronized bursting in a heterogeneous population | p. 333 |
| Contemporary Issues and Unresolved Problems | p. 338 |
| Single neuron properties and models | p. 338 |
| Analysis of coupled cells and networks | p. 340 |
| Geometric Analysis of Bursting Networks | p. 347 |
| Introduction | p. 348 |
| Existence, Uniqueness and Stability of Square-Wave Bursters | p. 349 |
| Assumptions on the geometric model | p. 350 |
| The main result | p. 352 |
| Bursting solution | p. 352 |
| When do trajectories jump down? | p. 353 |
| Return map and outline of the proof | p. 355 |
| Propagating Activity Patterns | p. 358 |
| The model | p. 358 |
| Numerical results | p. 361 |
| Singular construction of smooth waves | p. 362 |
| Estimating the wave speed | p. 364 |
| Transitions between Irregular and Clustered Activity | p. 367 |
| The model | p. 367 |
| Two distinct activity patterns | p. 369 |
| Geometric analysis of irregular activity | p. 370 |
| Geometric analysis of clustered activity | p. 375 |
| Transitions and dependence on parameters | p. 379 |
| Elliptic Bursters, Depolarization Block, and Waves | p. 385 |
| Introduction | p. 385 |
| Methods | p. 387 |
| Results | p. 388 |
| The burster | p. 388 |
| Breaking up is easy to do | p. 390 |
| A normal form | p. 392 |
| Elliptic dentistry | p. 393 |
| Discussion | p. 394 |
| Index | p. 397 |
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