It turns out there’s a direct link in the literature whereby dopamine turns off some coincidence detection functionality via DRD4.
A database at Stamford says,
this is one of the five types (d1 to d5) of receptors for dopamine. the activity of this receptor is mediated by g proteins which inhibit adenylyl cyclase.
Wikipedia says:
In neurons, adenylate cyclases are located next to calcium ion channels for faster reaction to Ca2+ influx; they are suspected of playing an important role in learning processes. This is supported by the fact that adenylate cyclases are coincidence detectors, meaning that they are only activated by several different signals occurring together.
A cartoon of adenylate cyclase, linked from a page at Davidson College, mainly because I love the rasmol colours 
It isn’t high level processing though - DRD1 and DRD5 stimulate adenylate cyclase. More like an AND gate - a basic component that can be used in many ways. Even so, social ritual addiction values coincidence detection for itself, rather than as something possibly related to learning.
