Selectionist Ideas and Neurobiology: O. Sporns, Selectionist and Instructionist Ideas in Neuroscience. E. Mayr, Population Thinking and Neuronal Selection: Metaphors or Concepts? M. Eigen, Selection andthe Origin of Information. Development and Neuronal Populations:. K.L. Crossin, Morphoregulatory Molecules and Selectional Dynamics during Development. E. Thelen and D. Corbetta, Exploration and Selection in the Early Acquisition of Skill. A.P. Georgopoulos, Population Activity in the Control of Movement. Functional Segregation and Integration in the Brain: G. Tononi, Reentry and the Problem of Cortical Integration. W. Singer, Coherence as an Organizing Principleof Cortical Functions. E. Poppel, Temporal Mechanisms in Perception. Memory and Models: G.N. Reeke, Jr., Selection versus Instruction: Use of Computer Models to Compare Brain Theories. L.R. Squire, Memory and Forgetting: Long-Termand Gradual Changes in Memory Storage. D.L. Schacter, Implicit Knowledge: New Perspectives on Unconscious Processes. Psychophysics, Psychoanalysis, and Neuropsychology: V.S. Ramachandran, Phantom Limbs, Neglect Syndromes, Repressed Memories, and Freudian Psychology. A.H. Modell, Neural Darwinism and a Conceptual Crisis in Psychoanalysis. O. Sacks, A New Vision of the Mind. Subject Index.