Blockade of µ-Opioid Receptors Is Correlated with Suppression of Activity

Blockade of µ-opioid receptors is correlated with suppression of activity in the anterior cingulate and insular cortices. This can be experimentally confirmed by administration of a µ-opioid receptor

A) antagonist and subsequent visualization via fMRI.
B) antagonist and simultaneous visualization via fMRI.
C) agonist, such as morphine, followed by visualization via fMRI.
D) antagonist, accompanied by administration of a µ-opioid receptor agonist, such as morphine, and simultaneous visualization via fMRI.
E) antagonist, accompanied by administration of a µ-opioid receptor agonist, such as morphine, followed by visualization via fMRI.