Figure 2. Head on collisions of waves in neuronal chains.

A) Snapshots of the membrane potential along the classical FN-chain () for five consecutive time instants . Long scale self-sustained waves travel (arrows mark direction of propagation) and annihilate at collision. B) Wave collision in the chain of bistable-excitable neurons (, ). Dashed horizontal line marks the voltage threshold . At collision a transient extra membrane current provokes wave regeneration (). The newly emitted waves propagate in opposite directions, while the wave generator collapses ().