Baroreceptor activity has been implicated in the modulation of pain. S
ensory detection thresholds and pain ratings were measured in a group
of 28 men during carotid baroreceptor manipulation with the PRES (phas
e-related external suction) neck suction technique. Brief, cardiac pha
se-related electrical impulses were delivered intracutaneously to the
finger. The results indicate that minimum baroreceptor activity was as
sociated with more severe pain, but had no effect on sensory detection
threshold. The results are discussed in terms of the learned model of
hypertension.