Durham VA Medical Center 1 article published in JoVE Neuroscience Placement of Extracranial Stimulating Electrodes and Measurement of Cerebral Blood Flow and Intracranial Electrical Fields in Anesthetized Mice Simone Degan1, Yu Feng1, Ulrike Hoffmann2, Dennis A. Turner1,3,4,5 1Department of Neurosurgery, Duke University Medical Center, 2Department of Anesthesiology and Pain Management, University Texas Southwestern Medical School, 3Department of Neurobiology, Duke University Medical Center, 4Department of Biomedical Engineering, Duke University, 5Research and Surgery Services, Durham VA Medical Center We describe a protocol for assessing dose-response curves for extracranial stimulation in terms of brain electrical field measurements and a relevant biomarker-cerebral blood flow. Since this protocol involves invasive electrode placement into the brain, general anesthesia is needed, with spontaneous breathing preferred rather than controlled respirations.