1. Kandel, E. R., Schwartz, J. H. & Jessell, T. M. Principles of Neural Science (Elsevier, New York, 2000).
2. Nicholls, J. G., Martin, A. R. & Wallace, B. G. From Neuron to Brain: A Cellular and Molecular Approach to the Function of the Nervous System (Sinauer Associates, Sunderland, 1992).
3. Cowan, W. M., Sudhof, T. C. & Stevens, C. F. Synapses (Johns Hopkins Univ. Press, Baltimore, Maryland, 2001).
4. Craig, A. M. & Boudin, H. Molecular heterogeneity of central synapses: afferent and target regulation. Nature Neurosci. 4, 569–578 (2001).
5. Xu-Friedman, M. A. & Regehr, W. G. Structural contributions to short-term synaptic plasticity. Physiol. Rev. 84, 69–85 (2004).