The Yale Child Study Center is actively recruiting participants for a one-time magnetic imaging pilot study. The study uses radio and magnetic fields, but no x-ray radiation. The purpose of the study is to explore the relationship between tics and levels of neurotransmitters, such as GABA and homocarnosine, which play a role in modulating excitability within the brain. Whether or not these neurotransmitters are integral to the physiology of tics remains unclear. Much current research into the course and treatment of Tourette's syndrome is focusing on possible dysregulation of neurotransmitters.

To participate, you must:

• Be male, ages 17-30 years
• Not be taking medications currently
• Have a diagnosis of Tourette Syndrome
• Have active tics

• Come to the Yale Child Study Center on a Friday afternoon (12pm-4pm)
• Complete questionnaires regarding Tourette, OCD, and ADHD symptoms, handedness, and mood
• Have a Magnetic Spectroscopy scan of your brain done, a process that will take about 1 ½ hours

You will receive $140.00 for the completed visit. If you are interested in learning more about this project, please contact:

If you are interested in the study please contact:

Eileen Hanrahan, PNP
Tel: (203) 737-5634
e-mail: eileen.hanrahan@yale.edu

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