Wayne S. Sossin, Department of Neurology and Neurosurgery<br>Jean-Claude Lacaille, Department of Physiology<br>Vincent F. Castellucci, Department of Physiology<br>Sylvie Belleville, Department of Psychology<br>Montreal Neurological Institute and Hospital<br>McGill University, Montreal, Quebec, Canada<br><br>SECTION I. CELLULAR AND MOLECULAR APPROACHES TO THE ESSENCE OF MEMORY<br>Molecular memory traces <br>W.S. Sossin <br>PKMζ,LTP Maintenance, and the dynamic molecular biology of memory storage <br>T.C. Sacktor <br>Understanding the importance of mRNA transport in memory<br>M. Del Rayo Sánchez-Carbente and L. DesGroseillers <br>Cap-dependent translation initiation and memory<br>J.L. Banko and E. Klann <br>Translational control of gene expression: a molecular switch for memory storage<br>M. Costa-Mattioli and N. Sonenberg <br>Regulation of hippocampus-dependent memory by cyclic AMP-dependent protein kinase<br>T. Abel and P.V. Nguyen <br>Synaptic tagging and cross-tagging and related associative reinforcement processes of functional plasticity as the cellular basis for memory formation<br>S. Frey and J.U. Frey<br>Synaptic plasticity in learning and memory: stress effects in the hippocampus<br>J.G. Howland and Y.-T. Wang <br>The role of the GluR-A (GluR1) AMPA receptor subunit in learning and memory<br>D.J. Sanderson, M.A. Good, P.H. Seeburg, R. Sprengel, J.N.P. Rawlins and D.M. Bannerman <br>Synaptic remodelling, synaptic growth and the storage of long-term memory in aplysia<br>C.H. Bailey and E.R. Kandel <br>Spine dynamics and synapse remodelling during LTP and memory processes<br>M. De Roo, P. Klauser, P. Mendez Garcia, L. Poglia and D. Muller<br><br>SECTION II. SYSTEMS APPROACHES TO THE ESSENCE OF MEMORY<br>The age of plasticity: developmental regulation of synaptic plasticity in neocortical microcircuits<br>A. Maffei and G. Turrigiano <br>Differential mechanisms of transmission and plasticity at mossy fiber synapses<br>C.J. McBain <br>Long-term synaptic plasticity in hippocampal feedback inhibitory networks<br>J.G. Pelletier and J.-C. Lacaille <br>Persistent neural activity in the prefrontal cortex: a mechanism by which BDNF regulates working memory?<br>E.M. Galloway, N.H. Woo and B. Lu <br><br>SECTION III. ANIMAL APPROACHES TO THE ESSENCE OF MEMORY<br>Animal models and behaviour: their importance for the study of memory<br>V.F. Castellucci<br>New tricks for an old slug: the critical role of postsynaptic mechanisms in learning and memory in aplysia<br>D.L. Glanzman <br>Olfactory memory traces in Drosophila<br>J. Berry, W.C. Krause and R.L. Davis <br>Associative learning signals in the brain<br>W.A. Suzuki <br>SECTION IV. HUMAN APPROACHES TO THE ESSENCE OF MEMORY<br>What are the differences between long-term, short-term, and working memory?<br>N. Cowan <br>Encoding-retrieval overlap in human episodic memory: a functional neuroimaging perspective<br>M.D. Rugg, J.D. Johnson, H. Park and M.R. Uncapher <br>Cognitive aging and increased distractibility: costs and potential benefits<br>M.K. Healey, K.L. Campbell and L. Hasher<br>Characterizing the memory changes in persons with mild cognitive impairment<br>S. Belleville, S. Sylvain-Roy, C. De Boysson and M.-C. M¨¦nard <br>Aging, metamemory regulation and executive functioning<br>M. Isingrini, A. Perrotin and C. Souchay <br>Cognitive neuroscience studies of semantic memory in Alzheimer's disease<br>H. Chertkow, C. Whatmough, D. Saumier and A. Duong<br>The effects of surgery and anesthesia on memory and cognition<br>C. Nicole, T. Rame, Q. Yanqin and B. Gilbert