title: Field distribution of epidural electrical stimulation.
abstract: Epidural electrical stimulation has been applied in clinics for many years. However, there is still a concern about possible injury to spinal nerves. This study investigated electrical field and current density distribution during direct epidural electrical stimulation. Field distribution models were theoretically deduced, while the distribution of potentials and current were analyzed. The current density presented an increase of 70-80%, with one peak value ranging from -85° to 85° between the two stimulated poles. The effect of direct epidural electrical stimulation is mainly on local tissue surrounding the electrodes, concentrated around the two stimulated positions.
authors.affiliation: Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, People's Republic of China.
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Xie
authors.forename: Hong yan
authors.initials: Hy
authors.lastname: Cui
authors.forename: Shengpu
authors.initials: S
authors.lastname: Xu
authors.forename: Yong
authors.initials: Y
authors.lastname: Hu
mesh_terms: D004558:Electric Stimulation; D004566:Electrodes; D004574:Electromagnetic Fields; D004824:Epidural Space; D006801:Humans; D008962:Models, Theoretical; D013116:Spinal Cord / Q000033:anatomy & histology / Q000502:physiology
keywords: Current density distribution; Electrical field distribution; Epidural electrical stimulation; Spinal cord