Orientation maps in primary visual cortex: a Hebbian model of intracortical and geniculocortical plasticity
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
2001
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | München, Techn. Univ., Diss., 2001 |
| Beschreibung: | 158 S. Ill., graph. Darst. |
Internformat
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Datensatz im Suchindex
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CONTENTS
INTRODUCTION 3
1 CENTRAL VISUAL PATHWAYS 7
1.1 NEURONS. 9
1.1.1 STRUCTURE AND ELECTRICAL PROPERTIES. 9
1.1.2 SYNAPSES. 11
1.2 THE RETINA. 13
1.3 THE LATERAL GENICULATE NUCLEUS. 15
1.4 THE PRIMARY VISUAL CORTEX. 16
1.4.1 ANATOMICAL STRUCTURE. 16
1.4.2 RECEPTIVE FIELDS. 16
1.4.3 COLUMNAR ORGANIZATION AND CORTICAL MAPS. 19
1.5 DEVELOPMENT . 21
1.6 SUMMARY. 25
2 MODELING SELF-ORGANIZATION IN THE PRIMARY VISUAL CORTEX 29
2.1 SPIKING NEURONS . 31
2.2 NETWORK SETUP AND SIMULATION ALGORITHM. 32
2.3 LEARNING MECHANISMS. 35
2.4 DATA ANALYSIS ,. 39
2.5 INTRACORTICAL SELF-ORGANIZATION. 40
2.6 COMBINED FEEDFORWARD AND INTRACORTICAL PLASTICITY . 44
2.7 SIMULATING REVERSE LID-SUTURE. 46
2.8 SIMULATION PARAMETER VALUES. 49
2.8.1 INTRACORTICAL PLASTICITY. 49
2.8.2 GENICULOCORTICAL PLASTICITY./. 50
2.9 SUMMARY AND DISCUSSION. 51
3 CORRELATIONS OF ACTIVITY IN NETWORKS OF SPIKING NEURONS 55
3.1 NEURON MODEL. 56
3.2 NETWORK ENSEMBLES. 57
3.2.1 NOTATION. 57
3.2.2 THE MEAN ACTIVITY. 58
3.2.3 JOINT PROBABILITY DENSITY OF TWO SPIKE EVENTS. 59
3.2.4 CONDITIONAL PROBABILITY DENSITY. 61
3.3 FEEDFORWARD NETWORKS. 62
1
BIBLIOGRAFISCHE INFORMATIONEN
HTTP://D-NB.INFO/962269786
2
CONTENTS
3.3.1 GENERAL CONSIDERATIONS. 62
3.3.2 NON-REFRACTORY NEURON WITH A LARGE NUMBER OF STATIS
TICALLY INDEPENDENT POISSON INPUTS . 65
3.3.3 FEW INPUT SYNAPSES. 68
3.4 RECURRENT NETWORKS . 71
3.4.1 NOTATION. 71
3.4.2 GENERAL CONSIDERATIONS. 72
3.4.3 EXPANDING THE ACTIVATION FUNCTION . 74
3.4.4 LINEAR NEURONS. 76
3.4.5 NON-LINEAR APPROXIMATION. 77
3.4.6 EXTERNAL INPUT. 80
3.5 NUMERICAL SIMULATIONS. 84
3.5.1 NUMERICAL SIMULATION OF AN ENSEMBLE OF NETWORKS . 84
3.5.2 NUMERICAL VERSUS ANALYTICAL RESULTS. 86
3.5.3 ON THE ROLE OF THE REFRACTORY POTENTIAL. 92
3.6 SUMMARY. 96
4 ANALYTICAL INVESTIGATION OF THE LEARNING DYNAMICS 99
4.1 REDUCED NETWORK MODEL .100
4.2 DYNAMICS OF SPIKE BASED LEARNING.101
4.3 PLASTICITY OF FEEDFORWARD SYNAPSES.104
4.3.1 THE LEARNING EQUATION.104
4.3.2 MODELING NEURONAL ARBORIZATION.108
4.3.3 LINEAR STABILITY ANALYSIS. ILL
4.3.4 NUMERICAL EVALUATION. 113
4.4 PLASTICITY OF INTRACORTICAL SYNAPSES.128
4.4.1 THE LEARNING EQUATION.128
4.4.2 MODELING NEURONAL ARBORIZATION.131
4.4.3 FIXED POINTS AND LINEAR STABILITY ANALYSIS .133
4.4.4 NUMERICAL EVALUATION.137
4.5 SUMMARY.
144
SUMMARY ' 147
BIBLIOGRAPHY
151 |
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| indexdate | 2024-10-09T18:07:18Z |
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| language | English |
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| spelling | Bartsch, Armin P. 1967- Verfasser (DE-588)123094984 aut Orientation maps in primary visual cortex a Hebbian model of intracortical and geniculocortical plasticity Armin P. Bartsch 2001 158 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2001 Säugetiere (DE-588)4051253-8 gnd rswk-swf Synopse (DE-588)4133152-7 gnd rswk-swf Modell (DE-588)4039798-1 gnd rswk-swf Plastizität Physiologie (DE-588)4174847-5 gnd rswk-swf Sehrinde (DE-588)4180718-2 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Säugetiere (DE-588)4051253-8 s Sehrinde (DE-588)4180718-2 s Synopse (DE-588)4133152-7 s Plastizität Physiologie (DE-588)4174847-5 s Modell (DE-588)4039798-1 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009480736&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Bartsch, Armin P. 1967- Orientation maps in primary visual cortex a Hebbian model of intracortical and geniculocortical plasticity Säugetiere (DE-588)4051253-8 gnd Synopse (DE-588)4133152-7 gnd Modell (DE-588)4039798-1 gnd Plastizität Physiologie (DE-588)4174847-5 gnd Sehrinde (DE-588)4180718-2 gnd |
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| title | Orientation maps in primary visual cortex a Hebbian model of intracortical and geniculocortical plasticity |
| title_auth | Orientation maps in primary visual cortex a Hebbian model of intracortical and geniculocortical plasticity |
| title_exact_search | Orientation maps in primary visual cortex a Hebbian model of intracortical and geniculocortical plasticity |
| title_full | Orientation maps in primary visual cortex a Hebbian model of intracortical and geniculocortical plasticity Armin P. Bartsch |
| title_fullStr | Orientation maps in primary visual cortex a Hebbian model of intracortical and geniculocortical plasticity Armin P. Bartsch |
| title_full_unstemmed | Orientation maps in primary visual cortex a Hebbian model of intracortical and geniculocortical plasticity Armin P. Bartsch |
| title_short | Orientation maps in primary visual cortex |
| title_sort | orientation maps in primary visual cortex a hebbian model of intracortical and geniculocortical plasticity |
| title_sub | a Hebbian model of intracortical and geniculocortical plasticity |
| topic | Säugetiere (DE-588)4051253-8 gnd Synopse (DE-588)4133152-7 gnd Modell (DE-588)4039798-1 gnd Plastizität Physiologie (DE-588)4174847-5 gnd Sehrinde (DE-588)4180718-2 gnd |
| topic_facet | Säugetiere Synopse Modell Plastizität Physiologie Sehrinde Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009480736&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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