title: Open questions on the mechanisms of neuromodulation with applied and endogenous electric fields.
authors.affiliation: Neurology, Columbia University New York, NY, USA.
authors.forename: Shennan A
authors.initials: SA
authors.lastname: Weiss
authors.affiliation: Biomedical Engineering, The City College of New York of CUNY New York, NY, USA.
authors.forename: Marom
authors.initials: M
authors.lastname: Bikson
keywords: brain oscillation; ephaptic; stimulation; systems neuroscience; transcranial direct current stimulation (tDCS); transcranial magnetic stimulation