Special Relativity. Lifetime.

[Alex K]

Not being a physicist, does the measurement of hertz qualify as a type of velocity (or speed)? Because if it does then the mind does have a velocity. Moreover, Francis Crick and his colleague proposed that neurons firing synchronously at about 40Hz specifically is what gives consciousness it's cohesion.

Not really. There is in principle no upper limit to frequency like there is for velocity, except that frequencies with periods shorter than Planck time are maybe impossible) but this limit does not derive from special relativity.

The physical concept frequency is related to more closely is actually energy. By virtue of the Schrödinger equation the two are basically the same. This way, frequency (of the quantum wave function) and velocity are related indirectly: larger velocity leads to larger kinetic energy leads to higher wave function frequency. But it's not a one-to-one correspondance.