Using positron emission tomography, researchers discovered that both the injection of a placebo solution and the injection of an actual opioid painkiller activated the same brain area, called the anterior cingulate cortex, which is known to contain opioid receptors.

Question

Quizplus · Accepted Answer

This statement is true. Studies have shown that the placebo effect can activate the brain's opioid receptors and produce pain relief, similar to the effects of actual opioid painkillers. The anterior cingulate cortex is one of the brain areas involved in this process.

Using Positron Emission Tomography, Researchers Discovered That Both the Injection