If you are age 20-55 years old and have trouble falling or staying asleep, then please
contact a UCSD research team to find out how a study drug affects these symptoms and how your
brain works. This is a one-week experimental pain research study using a study drug compared
to placebo. Your participation will include questionnaires, a physical exam and functional
Magnetic Resonance Imaging (fMRI) brain imaging techniques. We will test pain perception by
applying brief mild to moderate heat pain to the forearm, and also have you perform simple
computer tasks while we image and record brain activity using fMRI.