Dissonance, Excitation, Mimesis

The concept of Dissonance as constituted by a balance of Attraction and Repulsion seems to conflict with the proposal that it 'excites' an observer, since that balance seems to result in a neutralization of any motion.  However, though that zero-sum calculation applies to mechanical interactions, the two forces are dynamically compresent in a human process--Mimesis, which combines an assimilation to an object, while distinction from it is maintained.  In other words, in Mimesis, the combination of Attraction and Repulsion does not  necessarily result in immobility, as illustrated by the notable counter-example of the "pantomime" occasioned by Dionysian music, examined by Nietzsche in Birth of Tragedy #2.  Likewise, Excitation-Mimesis causality does not reduce to a Stimulus-Response Behaviorist paradigm, which is essentially a mechanical connection.