The Superior Colliculus New Approaches for Studying Sensorimotor Integration 1st Edition by William Hall, Adonis Moschovakis 0849300975 9780849300974

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ISBN 10: 0849300975

ISBN 13: 9780849300974

Author: William C. Hall, Adonis K. Moschovakis

The Superior Colliculus: New Approaches for Studying Sensorimotor Integration discusses new experimental and theoretical approaches to investigating how the brain transforms sensory signals into the motor commands that are used to shift the direction of gaze. The material includes the potential models for sensorimotor integration in the primate bra

The Superior Colliculus New Approaches for Studying Sensorimotor Integration 1st Table of contents:

1: Situating the Superior Colliculus within the Gaze Control Network

CONTENTS

1.1 INTRODUCTION

1.2 FRONTAL EYE FIELDS

1.3 SUPPLEMENTARY EYE FIELDS

1.4 PARIETAL CORTEX

1.5 PREFRONTAL CORTEX

1.6 CINGULATE CORTEX

1.7 BASAL GANGLIA

1.8 SUMMARY

ACKNOWLEDGMENTS

REFERENCES

2: Signal Coding in the Primate Superior Colliculus Revealed through the Use of Artificial Signals

CONTENTS

2.1 INTRODUCTION

2.2 ELECTRICAL MICROSTIMULATION

2.3 PHARMACOLOGICAL MANIPULATION

2.4 THE SC MOTOR MAP

2.5 VECTOR AVERAGING

2.6 MICROSTIMULATION AND THE SC MOTOR MAP REVISITED

2.7 DUAL CODING IN THE SC

2.8 MULTIPLE CODING FORMATS AS A PRINCIPLE OF SC ORGANIZATION

2.9 SC DECISION-MAKING

2.10 SUMMARY

ACKNOWLEDGMENTS

REFERENCES

3: Concurrent, Distributed Control of Saccade Initiation in the Frontal Eye Field and Superior Colliculus

CONTENTS

3.1 INTRODUCTION

3.2 THE TIME TO INITIATE A SACCADE

3.3 OVERVIEW OF THE SACCADE GENERATION NETWORK

3.4 ROLE OF SC AND FEF IN SACCADE INITIATION

3.5 CONCLUSIONS

ACKNOWLEDGMENTS

REFERENCES

4: Puffs and Patches: A Brief Chronological Review

CONTENTS

4.1 INTRODUCTION

4.2 ORIGINAL OBSERVATIONS OF PATCHES: RETINO- AND NIGROTECTAL PROJECTIONS

4.3 INITIAL OBSERVATIONS OF PATCHY EFFERENTS

4.4 AChE-RICH AND POOR DOMAINS: A CONCEPTUAL FRAMEWORK

4.5 GLOBAL NIGROTECTAL PROJECTIONS

4.6 POTENTIAL CHOLINERGIC INPUTS

4.7 SOMAS AND DENDRITES ARE RELATED TO DIFFERENT DOMAINS

4.8 CORTICOTECTAL PROJECTIONS: PATCHY AND ABUNDANT

4.9 CORTICAL AND BRAIN STEM INPUTS TO THE SAME PATCH: DIFFERENT FUNCTIONS?

4.10 AUDITORY AND OTHER PATCHY INPUTS

4.11 A NEW LOOK AT PATCHES: CYLINDERS, FRAMES, AND WALLS

4.12 CONCLUSIONS AND WHERE DO WE GO FROM HERE?

ACKNOWLEDGMENTS

REFERENCES

5: Structure-Function Relationships in the Superior Colliculus of Higher Mammals

CONTENTS

5.1 INTRODUCTION

5.2 THE CAUSAL RELEVANCE OF SC SIGNALS

5.3 THE DISCHARGE PATTERN OF SC NEURONS

5.4 THE CONNECTIONS OF FUNCTIONALLY IDENTIFIED SC NEURONS

5.5 BURST GENERATION

5.6 MODELS

5.7 FUTURE RESEARCH

REFERENCES

6: The Intracollicular Neuronal Network

CONTENTS

6.1 INTRODUCTION

6.2 METHODS

6.3 THE INTERLAMINAR NEURONAL NETWORK

6.4 HORIZONTAL INTERACTIONS IN THE INTERMEDIATE GRAY LAYER

6.5 SUMMARY AND FUTURE DIRECTIONS

ACKNOWLEDGMENTS

REFERENCES

7: Dynamic Modulation of Signal Transmission through Local Circuits

CONTENTS

7.1 INTRODUCTION

7.2 THE INTERLAMINAR CONNECTION OF THE MAMMALIAN SUPERIOR COLLICULUS

7.3 NEURAL MECHANISMS RESPONSIBLE FOR BURST GENERATION

7.4 CONCLUSIONS

ACKNOWLEDGMENTS

REFERENCES

8: Development and UseDependent Modification of Synaptic Connections in the Visual Layers of the Rodent Superior Colliculus

CONTENTS

8.1 INTRODUCTION

8.2 TECTAL POLARITY IS DEFINED BEFORE AXONS ARRIVE

8.3 COMPLEMENTARY GRADIENTS OF GUIDANCE CUES CONTROL INITIAL RETINAL AXON TOPOGRAPHIES

8.4 THE DEVELOPMENT OF THE RETINOTECTAL MAP PRECEDES THE FORMATION AND ALIGNMENT OF CORTICOTECTAL CONNECTIONS

8.5 BIRTH AND MIGRATION OF NEURONS FOLLOW A VENTRO-DORSAL BUT NOT ANTERIOR-POSTERIOR GRADIENT

8.6 VENTRO-DORSAL POSITION, DENDRITIC GEOMETRY, AXONAL PROJECTION, AND MOLECULAR MARKERS PROVIDE A BASIS FOR NEURON IDENTIFICATION IN THE MATURE AND DEVELOPING COLLICULUS

8.7 SYNAPTOGENESIS STARTS WITH GABA AND GLYCINE

8.8 AXON TERMINALS ADJUST TO THE NEEDS OF ACTIVE PATHWAYS

8.9 THE ONSET OF PATTERNED VISION DRIVES SYNAPSES TO MATURE PERFORMANCE

8.10 CONCLUSION

ACKNOWLEDGMENT

LIST OF ABBREVIATIONS

REFERENCES

9: Mechanisms Underlying Development of the Retinocollicular Pathway

CONTENTS

9.1 INTRODUCTION

9.2 THE RODENT SUPERIOR COLLICULUS AS A MODEL FOR PATHWAY DEVELOPMENT

9.3 ANATOMICAL DEVELOPMENT OF THE AFFERENT PATHWAYS TO SUPERIOR COLLICULUS

9.4 THE ROLE OF THE N-METHYL-D-ASPARTATE RECEPTOR

9.5 CHANGES IN THE CONTRIBUTION OF N-METHYL-D-ASPARTATE RECEPTORS TO VISUAL RESPONSES IN SUPERIOR COLLICULUS DURING DEVELOPMENT

9.6 SEROTONIN IS ALSO IMPORTANT FOR RETINAL FIBER SEGREGATION IN THE DEVELOPING SUPERIOR COLLICULUS

9.7 NITRIC OXIDE PARTIALLY MEDIATES RETRACTION OF THE RETINOCOLLICULAR PATHWAY

9.8 VOLTAGE GATED CALCIUM CHANNELS ALSO MEDIATE PATHWAY REFINEMENT

9.9 ARE NEUROTROPHINS ESSENTIAL FOR PATHWAY STABILIZATION?

9.10 IS PATHWAY REFINEMENT A CONSEQUENCE OF SYNAPTIC POTENTIATION AND DEPRESSION?

9.11 CONCLUSIONS AND SUMMARY

ACKNOWLEDGMENTS

REFERENCES

10: On the Role of Subcortical Feedback Mechanisms in the Control of Head-Unrestrained Gaze Saccades

CONTENTS

10.1 INTRODUCTION

10.2 RECENT STUDIES RELATING TO FEEDBACK CONTROL OF SACCADIC EYE MOVEMENTS MADE HEAD-FIXED

10.3 EVIDENCE FOR FEEDBACK CONTROL OF SACCADIC GAZE MOVEMENTS MADE HEAD-UNRESTRAINED

10.4 FEEDBACK MODELS OF THE SUBCORTICAL GAZE-SACCADE GENERATOR

10.5 CRITIQUES OF THE GAZE FEEDBACK HYPOTHESIS

10.6 CONCLUSIONS

ACKNOWLEDGMENTS

REFERENCES

11: Distributed Neural Processing in the Saccadic System

CONTENTS

11.1 INTRODUCTION

11.2 SPATIAL PROPERTIES ENCODED BY SINGLE COLLICULAR NEURONS AND SPATIAL ORGANIZATION OF THE COLLICULUS FOR SACCADES

11.3 INDICATIONS THAT TEMPORAL CODING IS ALSO IMPORTANT IN COLLICULAR FUNCTION

11.4 ESTIMATING THE SPATIOTEMPORAL POPULATION DISCHARGE IN SC DURING SACCADES

11.5 USING SACCADE PERTURBATIONS TO TEST THEORIES OF SC FUNCTION

11.6 THE WINNER-TAKE-ALL CONCEPT OF SC FUNCTION

11.7 DISTRIBUTED MODELING OF THE SUPERIOR COLLICULUS

ACKNOWLEDGMENT

REFERENCES

12: Commands for Coordinated Eye and Head Movements in the Primate Superior Colliculus

CONTENTS

12.1 INTRODUCTION

12.2 KEY QUESTIONS

12.3 RECENT FINDINGS

12.4 IMPLICATIONS OF RECENT FINDINGS

12.5 SUMMARY

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