Typical Chaotic Dynamics in Squid Giant Axons

We discuss that the dynamics of squid giant axons is a typical example of chaotic dynamics. There are two reasons why the dynamics of squid giant axons is a typical example of chaotic dynamics. The first reason is that the maximal Lyapunov exponent has a positive value which coincides with the metric entropy. The second reason is that the analysis of recurrence plot shows that the underlying dynamcis of squid giant axon is consistent with Devaney's definition of deterministic chaos.