I—Some Different Perspectives on the Basic Mechanisms.- 1. The Cellular Basis for Short-Term Memory in Endocrine Systems.- 2. An Increased Basal Calcium Hypothesis for Long-Term Potentiation of Transmitter Release in Bullfrog Sympathetic Ganglia.- 3. Sprouting as a Basis for Classical Conditioning in the Cat.- 4. Is Conditioning Supported by Modulation of an Outward Current in Pyramidal Cells of the Motor Cortex of Cats?.- 5. Conservation of Cellular Mechanisms for Models of Learning and Memory.- II—Long-Term Potentiation.- 6. Long-Term Potentiation of Synaptic Transmission in the Hippocampus Obeys Hebb’s Rule for Synaptic Modification.- 7. Chloride-Mediated Feedforward Inhibition Is Not Involved in Long-Term Potentiation.- 8. ?-Adrenergic Mechanisms in Long-Term Potentiation and Norepinephrine-Induced Long-Lasting Potentiation.- 9. Mechanisms of Noradrenergic Modulation of Dentate Gyrus Long-Term Plasticity.- III—Conditioning.- 10. Conditioning-Specific Biophysical Alterations in Rabbit Hippocampus.- 11. Serotonin and Aversive Conditioning in Adult and Juvenile Snails.- 12. Catecholaminergic and Opioid Mechanisms in Conditioned Food Intake Behavior of the Monkey Amygdala.- 13. The Neural Circuitry Subserving Aversive Conditioning of Contact Placing in Cats: The Necessity of the Internal Pallidum and Dispensability of the Cerebellum.- 14. Essential Involvement of Mossy Fibers in Projecting the CS to the Cerebellum during Classical Conditioning.- 15. Plasticity in Inferotemporal Cortex-Amygdala-Lateral Hypothalamus Axis during Operant Behavior of the Monkey.- 16. Responses of Nucleus Basalis of Meynert Neurons in Behaving Monkeys.- 17. Neurophysiological Investigations of Tonic Mechanisms of Conditioning.- 18. Hippocampal Units during Single-Alternation Conditioning in the White Rat.- 19. Conditioning and Habituation of the Arousal Response: A Historical Perspective.- 20. A Preliminary Note on Spatial EEG Correlates of Olfactory Conditioning.- 21. A Theoretical Neuronal Learning Mechanism That Predicts the Basic Categories of Classical Conditioning Phenomena.- IV—Anatomy and Cable Properties.- 22. Dendritic Spine Synapses, Excitable Spine Clusters, and Plasticity.- 23. Electrodiffusion Model of Electrical Conduction in Neuronal Processes.- 24. The Effectiveness of Individual Synaptic Inputs with Uniform and Nonuniform Patterns of Background Synaptic Activity.- 25. Passive and Active Properties of Motoneuron Dendrites.- 26. Some Conclusions Relevant to Plasticity Derived from Normal Anatomy.- 27. Anatomic Observations on Afferent Projections of Orbicularis Oculi and Retractor Bulbi Motoneuronal Cell Groups and Other Pathways Possibly Related to the Blink Reflex in the Cat.- V—Storing and Retrieving Information.- 28. Mammalian Systems for Storing and Retrieving Information.- 29. Humanlike Characteristics of Visual Mnemonic System in Macaques.- 30. Neuronal Activity in the Inferomedial Temporal Cortex Compared with That in the Hippocampal Formation: Implications for Amnesia of Medial Temporal Lobe Origin.- 31. Plasma Glucose Regulation of Memory Storage Processes.- 32. Behavioral Pharmacology of Memory: Opportunities for Cellular Explanations.- VI—Presynaptic and Postsynaptic Plasticity.- 33. Synaptic Efficacy Is Controlled by the Concentration of Transmitter in the Nerve Ending.- 34. Short-Term and Long-Term Plasticity Mediated by Changes in Responding Synapses at Crustacean Neuromuscular Junctions.- 35. Postsynaptic Events Associated with Long-Lasting Activity-Induced Changes in Excitability of Neocortical Neurons: Studies in the Anesthetized Rat and in Slices in Vitro.- 36. Postsynaptic Activity-Dependent Facilitation of Excitatory Synaptic Transmission in the Neocortex.- 37. The Role of Neuronal Activity in the Long-Term Regulation of Synaptic Performance at the Crayfish Neuromuscular Junction.- 38. Long-Term Effects of Firing on Excitability of Hippocampal CA1 Neurons.- 39. Locus-Coeruleus-Induced Enhancement of the Perforant-Path-Evoked Potential: Effects of Intradentate ? Blockers.- 40. Persistent Changes of Single-Cell Responses in Kitten Striate Cortex Produced by Pairing Sensory Stimulation with Iontophoretic Application of Neurotransmitters and Neuromodulators.- 41. Norepinephrine-Dependent Neuronal Plasticity in Kitten Visual Cortex.- 42. Possible Indications of Noradrenergic Involvement in Behavioral Plasticity.- VII—Biophysical Considerations and New Approaches.- 43. Digital Imaging of Ca2+ Levels in CNS Neurons under Conditions That Induce Facilitating Increases in Ca2+ Levels and Sustained Ca2+ Elevation.- 44. A Method to Investigate a Metabolic Process in a Single Neuron and Its Utilization in the Study of Fast Axonal Transport of Acetylcholine in a Cholinergic Neuron of Aplysia.- 45. Modulation of the GABA- and Pentobarbital-Gated Cl Current by Intracellular Calcium in Frog Sensory Neurons.- 46. Contrasting Roles of a Brain-Specific Protein Kinase C Substrate: Has Protein F1 Evolved a New Function in CNS of Higher Vertebrates?.- 47. Evolutionary Origin of Electrical Excitability.- Contributors.