Mindlessly mapping the brain – The Spike – MediumWe have one complete connectome, the 279 neurons of the nematode worm C. Elegans (for the pedants: its hemaphrodite form has 302 neurons, of which 279 form a single connected network). Texts uncountable have discussed this wiring diagram as the epitome of “a” connectome. Strictly speaking this is not true. Heroic as the original 1986 paper was, it missed out some connections; these were completed in 2011. The connectome we have is then actually an amalgam of two different creatures. What will happen if we replicate this connectome? Are there really all the exact same number of connections between the exact same neurons in every C. Elegans? It seems that each of the neurons is genetically specified, and in such a minuscule nervous system it is possible that each and every one of the connections is too. But would you bet your house on it?