1. Baddeley, A. Human Memory (Lawrence Erlbaum, Hove, UK, 1990).
2. Fuster, J. M. The Prefrontal Cortex: Anatomy, Physiology, and Neuropsychology of the Frontal Lobe 3rd edn. (Lippincott-Raven, New York, 1997).
3. Cohen J. D. et al. Temporal dynamics of brain activation during a working memory task. Nature 386, 604–608 (1997).
4. Dehaene, S., Jonides, J., Smith, E. E. & Spitzer, M. in Fundamental Neuroscience (eds. Zigmond, M. J., Bloom, F. E., Landis, S. C., Roberts, J. L. & Squire, L. R.) 1543–1564 (Academic, San Diego, California, 1999).
5. Fuster, J. M. Unit activity in prefrontal cortex during delayed-response performance: neuronal correlates of transient memory. J. Neurophysiol. 36 , 61–78 (1973).