<prompt> The normal P wave is biphasic in lead:VILIIaVFaVR  <response>: Answer. A VI: Normal P wave may be seen as a Biphasic wave in lead V1. The normal P wave in lead V1 may be biphasic with a positive component reflecting right atrial depolarization followed by a small 1 mm negative component reflecting left atrial depolarization - Harrison Note: The normal P wave is negative inveed in lead aVR. 