Measuring the Number of Dopamine Receptors Occupied by a Radioactive

question 139

Multiple Choice

Measuring the number of dopamine receptors occupied by a radioactive drug in people with schizophrenia led to the finding that:

• A) the dopamine hypothesis is incorrect.
• B) dopamine D2 receptor levels were low.
• C) excessive dopamine release occupies a greater number of D2 receptors.
• D) the primary problem is supersensitive D2 receptors.