Multiple somatic areas

1 The Somatic Sensory Cortex: Sm I in Prosimian Primates.- 1. Comparative Study of Primates.- 2. Comparative Significance of Sulcal Patterns in Sensorimotor Cortex of Primates.- 2.1. Living and Extinct Prosimians.- 2.2. Old and New World Simians.- 3. Comparative Significance of Physiological Organization and Cytoarchitectonic Fields of Sm I in Primates.- 3.1. Rationale for Galago Studies.- 3.2. Intrinsic Organization of Sm I in Galago.- 3.3. Homologs of Sm I in Prosimian and Simian Primates.- 4. Multiple Sm I Areas and Behavior.- 5. Summary.- Acknowledgments.- References.- 2 The Postcentral Somatosensory Cortex: Multiple Representations of the Body in Primates.- 1. Introduction.- 2. Features of Organization of the Two Representations of the Skin in Monkeys.- 2.1. Features of the Cutaneous Representations Common to Different Species.- 2.2. Species Differences in the Area 3b and the Area 1 Representations.- 3. Evidence That the Area 3b Representation of Monkeys is Homologous with S I of Other Mammals.- 4. Significance of Continuities and Discontinuities in Cutaneous Representations.- 5. Summary.- References.- 3 Organization of the SI Cortex: Multiple Cutaneous Representations in Areas 3b and 1 of the Owl Monkey.- 1. Introduction.- 2. Basic Approach.- 2.1. Experimental Strategy.- 2.2. A Note on Terminology.- 3. Summary of Results.- 3.1. Internal Organization of Parietal Somatosensory Strip (PSS) Cutaneous Fields.- 3.2. Some Implications.- 3.3. Further Studies on the Internal Organization of "S I" Fields.- 4. Evidence for Functional "Modules" within "S I".- 5. Dynamic Features of Cortical Field Organization.- Acknowledgments.- References.- 4 Organization of the S II Parietal Cortex: Multiple Somatic Sensory Representations within and near the Second Somatic Sensory Area of Cynomolgus Monkeys.- I. Introduction.- 2. Methods and Procedures.- 3. Results.- 3.1. The Location of S II.- 3.2. Receptive Fields in S II.- 3.3. Organization of the Body in S II.- 3.4. The S II Complex Zones.- 3.5. The Location of Area 7 Posterior to S II.- 3.6. Somatic Receptive Fields in Area 7b.- 3.7. Somatotopic Organization with in 7b.- 3.8. The Location of the Retroinsular Area, Postauditory Area and Granular Insula.- 3.9. Receptive Fields of Neurons within Ri and Pa.- 3.10. Possible Somatotopography Along the Fundal Region of the Lateral Sulcus.- 3.11. Somatic Sensory Activation of Granular Insular Neurons.- 3.12. Distribution of Somatic Submodalities.- 4. Discussion.- 4.1. Interpretations of Area 7 Function.- 4.2. Thalamocortical Connections to Area 7.- 4.3. The Retroinsular and Postauditory Cortical Areas.- Acknowledgments.- Abbreviations.- References.- 5 Body Topography in the Second Somatic Sensory Area: Monkey S II Somatotopy.- 1. Introduction.- 2. Methods.- 3. Results.- 3.1. The Cytoarchitecture of S II.- 3.2. Patterns of Axonal and Cellular Labeling.- 3.3. The Topology of the Body Representation in S II.- 3.4. The Retroinsular Area.- 4. Discussion.- 4.1. Reconstruction of the Lateral Sulcus.- 4.2. The Body Representation.- 4.3. Patterns of Cellular and Axonal Distribution in S II.- 4.4. Some Functional Considerations.- Acknowledgements.- Abbreviations.- References.- 6 Supplementary Sensory Area: The Medial Parietal Cortex in the Monkey.- 1. Introduction.- 2. Organization of Corticospinal Neurons in the Posterior Parietal Cortex.- 2.1. Experimental Design and Procedure.- 2.2. Projections to the Upper Cervical Cord.- 2.3. Cervical Enlargement Projections.- 2.4. Cortical Projections to the Lumbosacral Cord.- 2.5. Somatotopic Organization of Corticospinal Neurons in the Posterior Parietal Cortex.- 2.6. Proportion of the Corticospinal Tract Emanating from the Posterior Parietal Cortex.- 3. Response Properties of Neurons in the Medial Posterior Parietal Cortex.- 3.1. Experimental Design and Procedure.- 3.2. Receptive Fields of Neurons in the Medial Posterior Parietal Cortex.- 3.3. Response Properties of Neurons in the Medial Posterior Parietal Cortex.- 4. Observations Concerning the Connectivity of the Medial Posterior Parietal Cortex in Monkeys.- 4.1. Experimental Design and Procedure.- 4.2. Thalamic and Other Subcortical Afferent Connectivity.- 4.3. Corticocortical Connections.- 4.4. Source of Somatic Sensory Inputs to the Supplementary Sensory Area.- 5. Summary.- Abbreviations.- References.- 7 Spatial Organization of Primate Precentral Cortex: Quantitative Neighborhood Relations.- 1. Introduction.- 2. Methods.- 3. Results.- 4. Discussion.- 5. Summary.- References.- 8 Intracortical Connectivities of Somatic Sensory and Motor Areas: Multiple Cortical Pathways in Monkeys.- 1. Introduction.- Functional Areas and Cytoarchitecture.- 2. Topography of the S I and M I Connections.- 2.1. Area 3b.- 2.2. Areas 1 and 2.- 2.3. Area 5.- 2.4. Area 3a.- 2.5. Area 4.- 2.6. Summary of S I and M I Connections.- 3. Intraconnections of the Supplementary Motor and Supplementary Sensory Areas.- 3.1. Supplementary Motor Area-Afferents.- 3.2. Supplementary Motor Area-Efferents.- 3.3. Supplementary Sensory Area-Afferents.- 3.4. Supplementary Sensory Area-Efferents.- 4. General Features in the Organization of Intracortical Connections of the Somatic Sensory and Motor Areas.- 4.1. Laminar Organization.- 4.2. Columnar Organization.- 4.3. Somatotopic Organization.- 5. Functional Aspects.- 5.1. Relay of Sensory Inputs to Motor Cortex.- 5.2. Information Processing, Convergence and Control.- Acknowledgments.- References.