Detection of regions exhibiting irregular electrophysiological activity

A system comprising:

• memory to store machine readable instructions and data, the data comprising electrical data representing electrophysiological signals for a plurality of nodes distributed across a geometric surface over at least one time interval;
• at least one processor to access the memory and execute the instructions, the instructions comprising:
• code to detect at least one wave front that propagates across the geometric surface based on the electrical data, the geometric surface including a plurality of spatial regions;
• code to determine an indication of conduction velocity of the wave front for at least one spatial region of the plurality of spatial regions during the time interval based on a duration that the wave front resides within the at least one spatial region;
• code to identify slow conduction activity for the at least one spatial region based on the indication of conduction velocity being less than a threshold;
• and
• code to store in the memory conduction data to represent slow conduction activity for each of the spatial regions.

One or more non-transitory computer-readable media having instructions executable by a processor, the instructions programmed to perform a method comprising:

• determining a cycle duration for at least one time interval of electrophysiological signals at each of a plurality of nodes distributed across an anatomical surface;
• comparing each cycle duration to at least one threshold to identify each short duration event for each of the electrophysiological signals;
• quantifying a number of short duration events at each of the plurality of nodes that occur during the time interval;
• and
• generating a graphical map to display the number of short duration events that occur spatially across a graphical representation of the anatomical surface.

A system comprising:

• memory to store machine readable instructions and data, the data comprising electrical data representing electrophysiological signals for a plurality of nodes distributed across an anatomical surface over at least one time interval;
• at least one processor to access the memory and execute the instructions, the instructions comprising:
• code to select at least one measurement time interval such that the electrophysiological signals for at least some of the plurality of nodes include fibrillatory signals;
• code to determine a cycle duration for the electrophysiological signals at each of the plurality of nodes over the at least one measurement time interval;
• code to compare each cycle duration to a threshold to identify short duration events for each the electrophysiological signals;
• code to quantify a number of short duration events at each of the plurality of nodes that occur during the at least one measurement time interval;
• and
• code to generate a graphical map visualizing the number of short duration events across a graphical representation of the anatomical surface.