title: Search for computational modules in the C. elegans brain.
abstract: BACKGROUND
  Does the C. elegans nervous system contain multi-neuron computational modules that perform stereotypical functions? We attempt to answer this question by searching for recurring multi-neuron inter-connectivity patterns in the C. elegans nervous system's wiring diagram.
  
  
  RESULTS
  Our statistical analysis reveals that some inter-connectivity patterns containing two, three and four (but not five) neurons are significantly over-represented relative to the expectations based on the statistics of smaller inter-connectivity patterns.
  
  
  CONCLUSIONS
  Over-represented patterns (or motifs) are candidates for computational modules that may perform stereotypical functions in the C. elegans nervous system. These modules may appear in other species and need to be investigated further.
authors.affiliation: Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA. markus.reigl@gmx.net <markus.reigl@gmx.net>
authors.forename: Markus
authors.initials: M
authors.lastname: Reigl
authors.forename: Uri
authors.initials: U
authors.lastname: Alon
authors.forename: Dmitri B
authors.initials: DB
authors.lastname: Chklovskii
mesh_terms: D000818:Animals; D001921:Brain / Q000166:cytology / Q000502:physiology*; D017173:Caenorhabditis elegans / Q000033:anatomy & histology / Q000502:physiology*; D009415:Nerve Net; D016571:Neural Networks, Computer; D009474:Neurons / Q000502:physiology*; D013569:Synapses / Q000502:physiology*; D049490:Systems Biology