Nature Reviews Neuroscience 9, 813–825 (2008)

In the above article, an important reference was omitted and appropriate credit was not given for the first observation of silent synapses by laser-evoked glutamate uncaging on to single, visually identified dendritic spines. In the rat hippocampal CA1 region, Beique et al.1 observed thin spines that exhibited an NMDAR-mediated response at +40 mV, but no AMPAR-mediated response at −70 mV, a little over a year before a similar observation by Busetto et al.2.