In one embodiment of the invention, the implantable stimulation device comprises a rate responsive pacemaker, and the sensed physiological parameter used to adjust the rate threshold limit is also used to define a sensor indicated {HEAD ~ rate signal} to control {TAIL ~ the pacing rate} of the pacemaker 
to control
In one embodiment of the invention , the implantable stimulation device comprises a rate responsive pacemaker , and the sensed physiological parameter used to adjust the rate threshold limit is also used to define a sensor indicated { HEAD ~ rate signal } to control { TAIL ~ the pacing rate } of the pacemaker
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