Clinical Research Directory

Inclusion Criteria: 1. 18-50 years healthy men or women 2. Able to speak and understand English 3. No history of Chronic pain 4. No known neuropathies in areas that testing will take place, (forearms, muscle at the base of thumb on the palm of the hand and upper back/shoulder area. Exclusion Criteria: 1. Serious mental illness defined as distortions of perception, delusions, hallucinations, and unusual behaviors resulting in loss of contact with reality. This will be assessed during the screening interview. 2. Colorblindness or uncorrected cataracts. 3. Tissue damage in areas that testing will take place, (forearms, muscle at the base of the thumb on the palm of the hand, and upper back/should area.