A change in the arterial pressure-sympathetic activity or heart rate relation (baroreflex
resetting) can result from resetting of baroreceptors ('peripheral'resetting) or from an altered …

1. Pressure threshold (Pth) and suprathreshold pressure sensitivity (Sth) are important
measures of the pressure-discharge characteristics of arterial baroreceptors. An in vitro …

SUMMARY 1 Rapid resetting of the arterial baroreceptor threshold in the normal circulation
extends the pressure range over which baroreflexes operate at high gain. During sustained …

Recent studies show that the arterial baroreceptor reflex cannot be defined by a single buffer
curve. The reflex blood pressure and heart rate curves depend on the pressure to which the …

Spontaneously hypertensive rats (SHR), 4 wk of age, were treated with antihypertensive
agents for 40 wk. The treatment was withdrawn for 2 wk so that the animals experienced …

Arterial baroreceptors in the carotid sinuses and aortic arch are stimulated by vascular
stretch during increases in arterial pressure. Resetting of the baroreflex can be defined as a …

We studied the effects of sustained changes in resting mean arterial pressures (MAP) on
arterial baroreceptor properties in anesthetized rabbits and on the baroreceptor-heart rate …

SUMMARY 1 The arterial baroreceptors are reset to operate at higher pressure levels in
hypertension. Rapid (acute) resetting occurs within the first few minutes after elevation of …

Because of resetting, a role for baroreflexes in long-term control of arterial pressure has
been commonly dismissed in the past. However, in recent years, this perspective has …

Although human baroreflex responses have been studied during night as well as day, there
has been no attempt to distinguish circadian changes of baroreflex function from those …