Central inputs mask multiple adult neural networks within a single embryonic network.

摘要: It is usually assumed that, after construction of basic network architecture in embryos1, immature networks undergo progressive maturation to acquire their adult properties2,3,4. We examine this assumption the context lobster stomatogastric nervous system. In lobster, neuronal population5 that will form system at first orgnanized into a single embryonic generates rhythmic pattern6. The then splits different functional networks6 controlled by central descending systems7,8; these produce multiple motor programmes, distinctively from output network. show here can adult-like programmes. This occurs silenced removal inputs, pharmacologically stimulated restore rhythmicity. Furthermore, restoration flow information reversed pattern an pattern. indicates possesses ability express characteristics, but prevents it doing so. Functional may therefore not necessarily be derived ontogenetic changes themselves, result systems unmask pre-existing