A person with ___________ experiences severe pain in the genitals during sexual activity.

One of the general principles of psychoactive drug use is that "the effect of any psychoactive drug depends on ___________________."

A. the individual's history and expectations B. its legal status C. the user's diet D. the user's unique brain chemistry

The thick band of neurons that connects the right and left cerebral hemispheres is called the __________

a) cortex. b) cerebrum. c) corpus callosum. d) cerebellum.