Lexicor has a metric called Spectral Correlation Coefficient. BrainMaster software has a version of this metric, developed with the assistance of David Joffe, the originator of the Lexicor metric.
It can be used by selecting "SCC" in the Feedback Control panel, or via the Event Wizard.
The built-in protocol "peak" could be used, with the coherence type changed to select this metric.
This metric is also used by Dr. Kirtley Thornton.