The invention relates to an intracardial implantable electrode line for connection to an implantable medical device, in particular a cardiac pacemaker or cardioverter/defibrillator or the like, which has an acceleration sensor in the area of its distal end, which is implemented to record and differentiate acceleration values in at least two different directions. The invention additionally relates to a cardiac stimulation configuration which also has a cardiac stimulator in addition to such an electrode line.