Steven W. Johnson, M.D.

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503 494-7772



Dr. Johnson received his MD from University of Colorado Health Sciences University and his PhD in pharmacology from Oregon Health & Science University (OHSU). Dr. Johnson completed his neurology residency at OHSU in 1989.


Dr. Johnson joined the OHSU Movement Disorder faculty in 1990 and is now a Professor of Neurology. He maintains an active basic science program that investigates changes in brain neurochemistry that occur in animal models of Parkinson's disease. He is widely known nationally and internationally for his work that has characterized neuropharmacological actions of dopamine in the brain.


Dr. Johnson is also an expert clinician and has expertise in the clinical diagnosis and treatment of Parkinson's disease and other movement disorders.


Selected Publications

"AMP kinase regulates K-ATP currents evoked by NMDA receptor stimulation in rat subthalamic nucleus neurons," Neuroscience (Vol: 274, Page 138-152) - 2014

"Group i mGluRs evoke K-ATP current by intracellular Ca2+ mobilization in rat subthalamus neurons," Journal of Pharmacology and Experimental Therapeutics (Vol: 345, Issue: 1, Page 139-150) - 2013

"Anti-dyskinetic mechanisms of amantadine and dextromethorphan in the 6-OHDA rat model of Parkinson's disease: Role of NMDA vs. 5-HT1A receptors," European Journal of Neuroscience (Vol: 36, Issue: 9, Page 3224-3234) - 2012

"Chronic dopamine depletion augments the functional expression of K-ATP channels in the rat subthalamic nucleus," Neuroscience Letters (Vol: 531, Issue: 2, Page 104-108) - 2012

"Gamma-aminobutyric acidB receptor activation suppresses stimulus-evoked burst firing in rat substantia nigra reticulata neurons," NeuroReport (Vol: 23, Issue: 1, Page 40-44) - 2012


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