Final answer:
Hypnotic suggestion generally triggers a response of enhanced relaxation in the body, which includes a decreased heart rate and reduced blood pressure, due to the reduction of stress-related hormones and a calming of the autonomic nervous system.
Step-by-step explanation:
The physiological response that hypnotic suggestion triggers in the body is typically enhanced relaxation. Relaxation under hypnosis may lead to several physiological changes, such as decreased heart rate, decreased blood pressure, and reduced muscle tension. This effect can be understood through the process of hypnosis reducing the firing rates of baroreceptors (which indicate falling blood volume/pressure), decreasing the release of epinephrine and norepinephrine from the adrenal glands due to anticipation of relaxation by the limbic system, and ultimately fostering a state of calmness that influences the body's autonomic functions.
Contrary to inducing relaxation, hypnotic suggestion does not typically lead to increased blood pressure, heightened pain perception, or increased minute respiration. Unlike hypnosis, factors like anticipation of physical exercise or strong emotions, the presence of stimulants such as nicotine and caffeine, or hyperthermic conditions can increase heart rate, blood pressure, and body temperature, which are physiological markers of stress rather than relaxation.