A type of excitatory synaptic transmission which is novel for the vertebrate brain has been found in the medulla of the goldfish. Certain synaptic terminals (the club endings of Bartelmez) appear to ...

Nature 421, 66–70 (2003). It has come to our attention that we failed to cite a relevant study 1 in our Letter. These authors identified the mechanism of synaptic depression measured at the embryonic ...