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Physiologist Dr. Sushmita Purkayashta, a professor at Southern Methodist University, Dallas, explains her new study in which she and a team at Texas Institute for Brain Injury and Repair at U.T. Southwestern Medical Center, Dallas, probe for a biomarker that will provide an objective method for diagnosing concussion.
"In this study we are using transcranial Dopler ultrasound to exam cerebral blood flow velocity and study brain blood vessel function.
We are studying athletes with concussions and if there is any impairment with concussion, in terms of brain blood vessel function.
We are examining how well blood flow is auto-regulated by the brain. So this is a very local regulation within the brain, and an intact, or healthy brain, is able to regulate blood flow or maintain blood flow despite physiologic changes like changes in blood pressure and things like that."
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