1. James, W. The Principles of Psychology (Holt, New York, 1890).
2. Gold, P.E. & McGaugh, J.L. in Short-Term Memory (eds Deutsch, D. & Deutsch, J.A.) 355-378 (Academic, New York, 1975).
3. Izquierdo, I. & Medina, J. H. Neurobiol. Learn. Mem. 68, 285–316 (1997).
4. Squire, L. R., Knowlton, B. & Musen, G. Annu. Rev. Psychol. 44, 453–495 (1993).
5. Rosenzweig, M. R. et al. Behav. Brain Res. 57, 193–198 (1993).