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. 2015 Oct 14;10(10):e0140397. doi: 10.1371/journal.pone.0140397

Fig 1. Putative minimal C. elegans klinotaxis circuit (adapted from [40]).

Fig 1

Chemosensory class, ASE (white). Interneuron classes: AIY (blue) and AIZ (red). Neck motor neuron class: SMB (yellow). Neck angle (black). All classes have left and right cells. Motor neurons have additional dorsal and ventral pairs of cells. Chemical synapses shown as black arrows. Gap junctions shown as red undirected connections. Motor neurons receive an oscillatory input from a pattern generator (gray). The pattern could be generated either through proprioceptive feedback or from a central pattern generator (see Methods). The oscillatory input is antiphase for ventral (solid) and dorsal (dashed) motor neurons.