Front Cover; Strategies in Cold: Natural Torpidity and Thermogenesis; Copyright Page; Table of Contents; List of Participants; Preface; Introductory Remarks; Session I: Comparative Aspects of Natural Torpidity; Chapter 1. Natural Torpidity, Problems, and Perspectives; ABSTRACT; REFERENCES; Chapter 2. Circannual Cycles in Hibernators; ABSTRACT; I. WAYS OF GENERATING CIRCANNUAL CYCLES; II. CIRCANNUAL CYCLES IN HIBERNATORS; III. CONCLUSIONS; ACKNOWLEDGEMENTS; REFERENCES; Chapter 3. Shallow, Daily Torpor: A Thermoregulatory Adaptation; ABSTRACT; I. INTRODUCTION; II. SHALLOW DAILY TORPOR

III. TORPIDITY IN CRICETIDSIV. TORPOR IN HETEROMYIDAE; V. TORPOR IN DIPODIDAE; VI. TORPOR IN MURIDAE; VII. TORPOR IN INSECTIVORES; VIII. TORPOR IN PRIMATES; IX. TORPOR IN MARSUPIALS; X. DISCUSSION -- DAILY TORPOR; XI. CHIPMUNKS; XII. EVOLUTION OF TORPIDITY; XIII. SUMMARY; ACKNOWLEDGEMENT; REFERENCES; Chapter 4. Energetic and Field Aspects of Mammalian Torpor: The Richardson's Ground Squirrel; ABSTRACT; I. INTRODUCTION; II. FIELD ASPECTS OF NATURAL TORPIDITY; III. LABORATORY ASPECTS OF NATURAL TORPIDITY; IV. ENERGETICS OF NATURAL TORPIDITY; ACKNOWLEDGEMENTS; REFERENCES

Chapter 5. The Economics of Temperature Regulation and Torpor in Nonmammalian OrganismsABSTRACT; I. INTRODUCTION; II. AN ECONOMIC DEFINITION OF HOMEOTHERMY AND TORPOR; III. THE ENERGETIC HYPOTHESIS; IV. THE PREDATION HYPOTHESIS; V. SOCIAL INTERACTIONS; VI. TEMPORAL ENVIRONMENTAL VARIATION; ACKNOWLEDGEMENTS; REFERENCES; Session II: Central Nervous System Regulation in Natural Torpidity; Chapter 6. Neuronal Models of Temperature Regulation in Euthermic and Hibernating Mammals: An Alternate Model for Hibernation; ABSTRACT; I. INTRODUCTION; II. BASIC CONCEPTS -- EUTHERMIC MAMMALS

III. EUTHERMIC HIBERNATORSIV. HIBERNATION; V. AN ALTERNATE MODEL; VI. HIBERNATION, STEADY STATE BODY TEMPERATURE; REFERENCES; Chapter 7. Sleep and Hibernation: Electrophysiological and Thermoregulatory Homologies; ABSTRACT; I. HIBERNATION AS AN EXTENSION OF SLEEP; II. AROUSAL-STATE-RELATED CHANGES IN THE THERMOREGULATORY SYSTEM; III. THE REGULATION OF BODY TEMPERATURE DURING TORPOR; IV. SUMMARY AND CONCLUSIONS; ACKNOWLEDGEMENTS; REFERENCES; Chapter 8. Thermosensitivity of Preoptic Neurons and Hypothalamic Integrative Function in Hibernators and Nonhibernators; ABSTRACT; I. INTRODUCTION

II. THERMOSENSITIVITY OF THE PREOPTIC AREA (POA) IN HIBERNATORS AND NON-HIBERNATORSIII. THERMORESPONSIVE PREOPTIC NEURONES IN HIBERNATORS AND NON-HIBERNATORS; IV. ELECTRICAL ACTIVITY OF THE CENTRAL NERVOUS SYSTEM DURING HIBERNATION; V. INTEGRATIVE FUNCTION OF HYPOTHALAMIC STRUCTURES; VI. POSSIBLE MODE OF INTEGRATION OF THERMAL INFORMATION; ACKNOWLEDGEMENT; REFERENCES; Chapter 9. Time Sequence of Physiological Changes during Hibernation: The Significance of Serotonergic Pathways; ABSTRACT; I. INTRODUCTION; II. SEROTONIN METABOLISM IN THE BRAIN OF HIBERNATING ANIMALS