Light at Night Study

Light at Night Study

The purpose of this mechanistic study is to examine light sensitivity (melatonin suppression) in people with bipolar depression I, and compare it to healthy controls. This is not a treatment study.

The bipolar disorder I and healthy control arms are recruited from the existing Heinz C. Prechter Bipolar Research Program at the University of Michigan.

Inclusion Criteria:

• BMI 18-30 kg/m2
• Appropriate sleep schedules according to study staff. Sleep schedule is self-reported and confirmed through a sleep diary
• Healthy eyes as ascertained by eye exam at University of Michigan Kellogg Eye Center
• Willing and able to maintain stable sleep schedule during study.
• Participants will be breathalyzed and undergo urine drugs screens at every lab visit
• Acknowledge and understand that participants cannot drive themselves home after certain lab visits. Note that the research team will provide a travel stipend of $10 per visit to offset potential rideshare/taxi costs

Exclusion Criteria:

• Color blindness