单选题 Which of the following best defines "higher brain centers" (line 40) as the term is used in the passage?

• (A) The parts of the brain known as the somatosensory cortex, where the sensations of pain are processed
• (B) The parts of the brain whose function is to distinguish the sensory aspects of pain from it suffering aspect
• (C) The parts of the brain associated with pain, which appear to be insusceptible to placebo effects
• (D) The parts of the brain that are less active in poorly hypnotizable subjects than in easily hypnotizable subjects
• (E) The part of the brain known as the anterior cingulate cortex, whose activity is suppressed by hypnosis