The process that mediates signaling interactions between an SA node cardiomyocyte and an atrial cardiomyocyte by transfer of current between their adjacent cytoplasms via intercellular protein channels.
Synonyms:
exact_synonym:
SA node cardiac muscle cell to atrial cardiac muscle cell communication by electrical coupling; SA node cardiomyocyte to atrial cardiomyocyte communication by electrical coupling; SAN cardiomyocyte to atrial cardiomyocyte communication by electrical coupling; sinoatrial node cardiomyocyte to atrial cardiomyocyte communication by electrical coupling
narrow_synonym:
sinus node cardiomyocyte to atrial cardiomyocyte communication by electrical coupling