Some of the findings described in the article “Synaptic Basis for Developmental Plasticity in a Birdsong Nucleus” by Richard Mooney, which appeared on pages 2464–2477 of the July 1, 1992 issue, had been previously described in brief form in Mooney and Konishi (1991). Figure 9 and portions of Figure 10 in Mooney (1992) were reproduced from Mooney and Konishi (1991) with permission of the authors.
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