Cover picture: Rostral view of a model of the rat substantia nigra incorporating a three-dimensional reconstructed neuron from the substantia nigra pars reticulata (SNR), the projections originating from the visuo-oculomotor subterritory of the striatum and the nigrostriatal neurons projecting to this striatal region. The SNR is represented in gray, the dendritic arborizations of the SNR cell are shown in green, the axon are shown in cyan, the axonal terminal boutons are yellow, the striatal projections are red, and the nigrostriatal cells are pink. For details, see the article by Mailly et al. in this issue (pages 5247–5257).