Detecting conduction timing

A system comprising:

• memory to store machine readable instructions and data, the data comprising electrical data representing electrophysiological signals distributed across a body surface;
• at least one processor to access the memory and execute the instructions, the instructions comprising:
• a conduction pattern estimator that analyzes morphology and/or amplitude of each of a plurality of electrophysiological signals across a surface of a patient's body, to identify candidate segments of each of the plurality of signals that satisfy predetermined conduction pattern criteria;
• a conduction pattern parameter identifier that determines a conduction timing parameter for each of the identified candidate segments in the electrophysiological signals;
• and
• an output engine that provides output data to drive a display with a graphical map that includes a visualization of or derived from the conduction timing parameters determined for the electrophysiological signals.