Contents: Part I:Models of Neural Associativity.G. Lynch, R. Granger, U. Staubli, Long-Term Potentiation and the Structure of Memory. T.J. Teyler, A Model of Associative Interactions Mediated by N-Methyl-D-Aspartate Activation. Part II:Long-Term Potentiation in the Hippocampus.P. Andersen, Parameters Controlling the Induction of Long-Term Potentiation. W.C. Abraham, D.K. Bilkey, E.W. Kairiss, Long-Term Potentiation and Local Circuits in the Hippocampus. G. Buzsaki, F.H. Gage, Long-Term Potentiation: Does It Happen in the Normal Brain? When and How? Part III:EEG States and Memory.R.J. Racine, The Kindling Phenomenon: Epilepsy Model or Memory Model? (and Other Areas of Controversy). N. McNaughton, The Role of Hippocampal RSA: Spatial Memory Versus Anxiety. Part IV:Memory Disorders.R.G. Knight, B.E. Longmore, What Is an Amnesic? H.J. Markowitsch, Memory Disorders After Diencephalic Damage. J.A. Ogden, S. Corkin, Memories of H.M. Part V:Memory Models and Processes.W.E. Hockley, Interrogating Memory: A Decision Model for Recognition and Judgment of Frequency. A.A. Wright, Concept Learning by Monkeys and Pigeons. D.C. McCarthy, J.A. Nevin, The Consequences of Remembering. Part VI:Mechanisms of Nonhuman Memory.W.K. Honig, Structure and Function in the Spatial Memory of Animals. P.J. Urcuioli, A Search for Anticipatory Codes in Pigeon Working Memory.