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Preface | 1 | |
Part I | Fundamentals | |
1 | Biological Evidence for Synapse Modification Relevant for Neural Network Modelling | |
1. | Introduction | 7 |
2. | The Synapse | 11 |
3. | Long Term Potentiation | 13 |
4. | Two Characteristic Types of Experiment | 15 |
4.1 | Food Discrimination Learning in Chicks | 15 |
4.2 | Electrical Stimulation of Nervous Cell Cultures | 18 |
5. | Conclusion | 19 |
References and Further Reading | 20 | |
2 | What is Different with Spiking Neurons? | |
1. | Spikes and Rates | 23 |
1.1 | Temporal Average-Spike Count | 24 |
1.2 | Spatial Average-Population Activity | 26 |
1.3 | Pulse Coding-Correlations and Synchrony | 27 |
2. | 'Integrate and Fire' Model | 28 |
3. | Spike Response Model | 30 |
4. | Rapid Transients | 33 |
5. | Perfect Synchrony | 36 |
6. | Coincidence Detection | 38 |
7. | Spike Time Dependent Hebbian Learning | 39 |
8. | Temporal Coding in the Auditory System | 42 |
9. | Conclusion | 43 |
References | 45 | |
3 | Recurrent Neural Networks: Properties and Models | |
1. | Introduction | 49 |
2. | Universality of Recurrent Networks | 52 |
2.1 | Discrete Time Dynamics | 52 |
2.2 | Continuous Time Dynamics | 54 |
3. | Recurrent Learning Algorithms for Static Tasks | 56 |
3.1 | Hopfield Network | 56 |
3.2 | Boltzmann Machines | 58 |
3.3 | Recurrent Backpropagation Proposed by Fernando Pineda | 60 |
4. | Recurrent Learning Algorithms for Dynamical Tasks | 63 |
4.1 | Backpropagation Through Time | 63 |
4.2 | Jordan and Elman Networks | 64 |
4.3 | Real Time Recurrent Learning (RTRL) | 65 |
4.3.1 | Continuous Time RTRL | 65 |
4.3.2 | Discrete Time RTRL | 66 |
4.3.3 | Teacher Forced RTRL | 67 |
4.3.4 | Considerations about the Memory Requirements | 67 |
4.4 | Time Dependent Recurrent Backpropagation (TDRBP) | 68 |
5. | Other Recurrent Algorithms | 69 |
6. | Conclusion | 70 |
References | 72 | |
4 | A Derivation of the Learning Rules for Dynamic Recurrent Neural Networks | |
1. | A Look into the Calculus of Variations | 75 |
2. | Conditions of Constraint | 77 |
3. | Applications in Physics: Lagrangian and Hamiltonian Dynamics | 78 |
4. | Generalized Coordinates | 80 |
5. | Application to Optimal Control Systems | 82 |
6. | Time Dependent Recurrent Backpropagation: Learning Rules | 85 |
References | 88 | |
Part II | Applications to Biology | |
5 | Simulation of the Human Oculomotor Integrator Using a Dynamic Recurrent Neural Network | |
1. | Introduction | 92 |
2. | The Different Neural Integrator Models | 95 |
3. | The Biologically Plausible Improvements | 99 |
3.1 | Fixed Sign Connection Weights | 100 |
3.2 | Artificial Distance between Inter-Neurons | 101 |
3.3 | Numerical Discretization of the Continuous Time Model | 101 |
3.4 | The General Supervisor | 102 |
3.5 | The Modified Network | 103 |
4. | Emergence of Clusters | 104 |
4.1 | Definition | 105 |
4.2 | Mathematical Identification of Clusters | 106 |
4.3 | Characterization of the Clustered Structure | 106 |
4.4 | Particular Locations | 110 |
5. | Discussion and Conclusion | 110 |
References | 112 | |
6 | Pattern Segmentation in an Associative Network of Spiking Neurons | |
1. | The Binding Problem | 117 |
2. | Spike Response Model | 118 |
3. | Simulation Results | 121 |
3.1 | Pattern Retrieval and Synchronization | 123 |
3.2 | Pattern Segmentation | 124 |
3.3 | Context Sensitive Binding in a Layered Network with Feedback | 126 |
4. | Related Work | 129 |
4.1 | Segmentation with LEGION | 129 |
4.2 | How about Real Brains? | 130 |
References | 131 | |
7 | Cortical Models for Movement Control | |
1. | Introduction: Constraints on Modeling Biological Neural Networks | 135 |
2. | Cellular Firing Patterns in Monkey Cortical Areas 4 and 5 | 137 |
3. | Anatomical Links between Areas 4 and 5, Spinal Motoneurons, and Sensory Systems | 140 |
4. | How Insertion of a Time Delay can Create a Niche for Deliberation | 141 |
5. | A Volition-Deliberation Nexus and Voluntary Trajectory Generation | 142 |
6. | Cortical-Subcortical Cooperation for Deliberation and Task-Dependent Configuration | 146 |
7. | Cortical Layers, Neural Population Codes, and Posture-Dependent Recruitment of Muscle Synergies | 150 |
8. | Trajectory Generation in Handwriting and Viapoint Movements | 151 |
9. | Satisfying Constraints of Reaching to Intercept or Grasp | 155 |
10. | Conclusions: Online Action Composition by Cortical Circuits | 156 |
References | 157 | |
8 | Implications of Activity Dependent Processes in Spinal Cord Circuits for the Development of Motor Control; a Neural Network Model | |
1. | Introduction | 164 |
2. | Sensorimotor Development | 165 |
3. | Reflex Contributions to Joint Stiffness | 166 |
4. | The Model | 167 |
4.1 | Neural Model | 168 |
4.2 | Musculo-Skeletal Model | 170 |
4.3 | Muscle Model | 172 |
4.4 | Sensory Model | 173 |
4.5 | Model Dynamics | 174 |
5. | Experiments | 174 |
5.1 | Training | 176 |
5.2 | Neural Control Properties | 177 |
5.3 | Perturbation Experiments | 179 |
6. | Discussion | 182 |
References | 185 | |
9 | Cortical Maps as Topology-Representing Neural Networks Applied to Motor Control: Articulatory Speech Synthesis | |
1. | Lateral Connections in Cortical Maps | 190 |
2. | A Neural Network Model | 191 |
3. | Spatial Maps as Internal Representations for Motor Planning | 193 |
3.1 | Dynamical Behavior of Spatial Maps | 194 |
3.2 | Function Approximation by Interconnected Maps | 196 |
3.3 | Dynamical Inversion | 199 |
4. | Application of Cortical Maps to Articulatory Speech Synthesis | 200 |
4.1 | Cortical Control of Speech Movements | 202 |
4.2 | An Experimental Study | 203 |
4.2.1 | The Training Procedure | 204 |
4.2.2 | Field Representation of Phonemic Targets | 208 |
4.2.3 | Non-Audible Gestures and Compensation | 211 |
4.2.4 | Generation of VVV ... Sequences | 211 |
5. | Conclusions | 215 |
References | 216 | |
10 | Line and Edge Detection by Curvature-Adaptive Neural Networks | |
1. | Introduction | 220 |
2. | Biological Constraints | 223 |
3. | Construction of the Gabor Filters | 224 |
4. | The One-Dimensional Case | 224 |
5. | The Two-Dimensional Case | 225 |
6. | Simple Detection Scheme | 225 |
7. | An Extended Detection Scheme | 226 |
8. | Intermezzo: A Multi-Scale Approach | 230 |
9. | Advanced Detection Scheme | 231 |
10. | Biological Plausibility of the Adaptive Algorithm | 233 |
11. | Conclusion and Discussion | 235 |
References | 238 | |
11 | Path Planning and Obstacle Avoidance Using a Recurrent Neural Network | |
1. | Introduction | 241 |
2. | Problem Description | 242 |
3. | Task Descriptions | 243 |
3.1 | Representations | 243 |
3.2 | Fusing the Representations into a Neuronal Map | 245 |
3.3 | Path Planning and Heading Decision | 246 |
4. | Results | 248 |
5. | Conclusions | 251 |
References | 253 | |
Index | 255 |
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Add Plausible Neural Networks for Biological Modelling, This book has the unique intention of returning the mathematical tools of neural networks to the biological realm of the nervous system, where they originated a few decades ago. It aims to introduce, in a didactic manner, two relatively recent development, Plausible Neural Networks for Biological Modelling to the inventory that you are selling on WonderClubX
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Add Plausible Neural Networks for Biological Modelling, This book has the unique intention of returning the mathematical tools of neural networks to the biological realm of the nervous system, where they originated a few decades ago. It aims to introduce, in a didactic manner, two relatively recent development, Plausible Neural Networks for Biological Modelling to your collection on WonderClub |