A medical system, comprising: a medical device including a base electrode (e34a) and a plurality of electrodes; and a control unit in communication with the base electrode (e 34a) and the plurality of electrodes, the control unit configured to: record a base cardiac electrogram signal at the base electrode (e 34a) for a predetermined amount of time; record a plurality of cardiac electrogram signals at the plurality of electrodes other than the base electrode (e 34a) for the predetermined amount of time simultaneously with recording the base electrogram signal at the base electrode (e 34a), each of the plurality of electrodes other than the base electrode (e 34a) being within a predetermined distance from the base electrode; determine a plurality of different correlation coefficients, each of the plurality of correlation coefficients corresponding to the base cardiac electrogram signal and a different one of the plurality of cardiac electrogram signals average the plurality of correlation coefficients to generate a correlation coefficient average for the base electrode (e 34a) based on the spatial relationship between the base electrode (e 34a) and the plurality of electrodes other than the base electrode (e 34a); associate the correlation coefficient average to the specific area of cardiac tissue where the base electrode is positioned; and map the specific area of cardiac tissue where the base electrode (e 34a) is positioned to the average of the plurality of correlation coefficients. a medical device including a base electrode (e34a) and a plurality of electrodes; and a control unit in communication with the base electrode (e 34a) and the plurality of electrodes, the control unit configured to: record a base cardiac electrogram signal at the base electrode (e 34a) for a predetermined amount of time; record a plurality of cardiac electrogram signals at the plurality of electrodes other than the base electrode (e 34a) for the predetermined amount of time simultaneously with recording the base electrogram signal at the base electrode (e 34a), each of the plurality of electrodes other than the base electrode (e 34a) being within a predetermined distance from the base electrode; determine a plurality of different correlation coefficients, each of the plurality of correlation coefficients corresponding to the base cardiac electrogram signal and a different one of the plurality of cardiac electrogram signals average the plurality of correlation coefficients to generate a correlation coefficient average for the base electrode (e 34a) based on the spatial relationship between the base electrode (e 34a) and the plurality of electrodes other than the base electrode (e 34a); associate the correlation coefficient average to the specific area of cardiac tissue where the base electrode is positioned; and map the specific area of cardiac tissue where the base electrode (e 34a) is positioned to the average of the plurality of correlation coefficients. record a base cardiac electrogram signal at the base electrode (e 34a) for a predetermined amount of time; record a plurality of cardiac electrogram signals at the plurality of electrodes other than the base electrode (e 34a) for the predetermined amount of time simultaneously with recording the base electrogram signal at the base electrode (e 34a), each of the plurality of electrodes other than the base electrode (e 34a) being within a predetermined distance from the base electrode; determine a plurality of different correlation coefficients, each of the plurality of correlation coefficients corresponding to the base cardiac electrogram signal and a different one of the plurality of cardiac electrogram signals average the plurality of correlation coefficients to generate a correlation coefficient average for the base electrode (e 34a) based on the spatial relationship between the base electrode (e 34a) and the plurality of electrodes other than the base electrode (e 34a); associate the correlation coefficient average to the specific area of cardiac tissue where the base electrode is positioned; and map the specific area of cardiac tissue where the base electrode (e 34a) is positioned to the average of the plurality of correlation coefficients.