gidili

"While the connectivity of the head circuit for locomotion is known, the roles of the individual neurons are somewhat unclear. One contributing factor is that the dense packing of neurons in the nerve ring makes laser ablation of specific cells more difficult."

"When a healthy worm is touched on the nose, it will immediately start backing up [24]. Similarly if touched on the tail, it will reverse direction if currently backing up, and will accelerate if going forward"

Source: http://www.comp.leeds.ac.uk/jboyle/JordanBoyle_files/J_Boyle_PhD.pdf