Final answer:
Highly hypnotizable people have higher activity in the hypothalamus and pons, which regulate sleep and REM sleep respectively.
Step-by-step explanation:
Hypnotizable people have higher activity in two key areas of the brain: the hypothalamus and the pons. The hypothalamus is responsible for regulating sleep, while the pons plays a role in controlling rapid eye movement (REM) sleep. These areas work together to influence the sleep-wake cycles and induce a hypnotic state in highly hypnotizable individuals.
Brain imaging studies have shown global changes in brain functioning associated with hypnotic states. It's plausible to consider that regions involved in attention, such as the frontal lobes, and areas involved in awareness and processing of stimuli, like the thalamus, could be particularly active in individuals who are highly hypnotizable.