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Written by experts on the forefront of investigations of brain function, vision, and perception, the material presented is of an unparalleled scientific quality, and shows that analyses of enormous breadth and sophistication are required to probe the structure and function of brain regions. The articles are highly persuasive in showing what can be achieved by carrying out careful and imaginative experiments. The Cat Primary Visual Cortex should emerge as essential reading for all those interested in cerebral cortical processing of visual signals or researching or working in any field of vision.
List of contents
Preface
1 The Concept of Cat Primary Visual Cortex
Prologue
Milestones in the Development of the Concept of Cat Primary Visual Cortex
Connections
Composition of Area 17
Comparison of the Architectonics of Areas 17 and 18 and Identification of Borders
Visual Maps in Areas 17 and 18
Circuitry and Signal Processing in Areas 17 and 18
Visually Guided Behavior
Synthesis
Recent Challenges to the Primacy of Areas 17 and 18
Epilogue
2 Optical Imaging of Functional Architecture in Cat Primary Visual Cortex
Introduction
Methodological Aspects of Optical Imaging
Optical Imaging of Functional Maps in Cat Visual Cortex
Relationships between Columnar Systems
Comparison with the Functional Architecture in Other Species
Concluding Remarks
3 2-Deoxyglucose Architecture of Cat Primary Visual Cortex
Introduction
Orientation Domains
Ocular Dominance Domains
Spatial Frequency Domains
Development and Experience-Dependent Changes of Cortical Maps
Advantages and Disadvantages of the 2-DG Technique
Outlook
4 Functional Mapping in The Cat Primary Visual Cortex Using High Magnetic Fields
Introduction
Limitations of Current Techniques, or Why We Need Another Mapping Technique
Functional Magnetic Resonance Imaging
Functional MRI of the Cat Primary Visual Cortex
Conclusions
5 Relationships of LGN Afferents and Cortical Efferents to Cytochrome Oxidase Blobs
Parallel Processing in the Mammalian Visual System
Organization of CO Staining in Cat Primary Visual Cortex
Geniculate Inputs to the CO Blobs
Molecular Markers for Other Blob/Interblob Inputs
Outputs of the CO Blobs
Projections to Area 19
Comparisons with Primates
Conclusions
6 INFLUENCE OF TOPOGRAPHY AND OCULAR DOMINANCE ON THE FUNCTIONAL ORGANIZATION OF CALLOSAL CONNECTIONS IN CAT STRIATE CORTEX
Introduction
The Vertical Meridian Rule
Callosal Fibers Interlink Cortical Sites That are in Retinotopic, Rather Than Anatomical, Correspondence
Interhemispheric Correlated Activity Guides Callosal Development
Summary and Concluding Remarks
7 Essential and Sustaining LGN Inputs to Cat Primary Visual Cortex
Introduction
The Reversible Inactivation Technique
Two Circuits in Area 17
Area 18: More Integrative Than Area 17
Functional Architecture of Visual Cortex
8 Integration of Thalamic Inputs to Cat Primary Visual Cortex
Introduction
Simple Receptive Fields
Numerical Aspects of the Geniculocortical Projection
Feedforward (Thalamic) Connections and Simple Cell Responses
Intrinsic Connections and Simple-Cell Responses
Conclusions
9 The Emergence of Direction Selectivity in Cat Primary Visual Cortex
Overview
Directional Tuning: The Basics
Computational Requirements for Direction Selectivity
Biological Instantiation of Computational Principles
Origins of Cortical Timings: The Lagged/Nonlagged Cell Model
Comparison with Recent Models
Intracortical Inhibition: Experimental Evidence
How are Inputs Combined?
Intralaminar and Interlaminar Interactions
Summary and Conclusions
Future Directions
10 Long-Range Intrinsic Connections in Cat Primary Visual Cortex
Introduction
Historical Overview
Summary
Shows that analyses of breadth and sophistication are required to probe the structure and function of brain regions. This book provides a comprehensive account of cat primary visual cortex and includes use of illustrations including color. It talks about research from structure to connections to functions.
