  We demonstrate that the extensive class of open Markov quantum systems
describing by the Pauli master equation can be represented in so- called
quasithermodynamic form .Such representation has certain advantages in many
respects for example it allows one to specify precisely the parameter region in
which the relaxation of the system in question to its stationary state occurs
monotonically.With a view to illustrate possible applications of such
representation we consider concrete Markov model that has in our opinion
self-dependent interest namely the explanation of important and well
established by numerous experiments the Yerkes-Dodson law in psychology
