title: Development of a magnetic resonance-compatible galvanic skin response measurement system using optic signal.
abstract: The purpose of the current study is to develop a magnetic resonance (MR)-compatible galvanic skin response (GSR) measurement system that can measure the GSR signal during MR image acquisition. If GSR signals are measured simultaneously with the acquisition of MR images, there can be a mutual interference effect. The present system was designed to block noises caused by the main magnetic field, the gradient magnetic field, and the radio frequency (RF) pulse when MR images are acquired. To minimize the distortion of MR images, the GSR measurement system was shielded. Especially, this system used analog, not digital, elements in order to remove any possible effects on MR images. An RF-interference-free optical data link using the pulse-width modulation technique was adopted in order to transmit GSR signals measured inside the MR room. The experiment verified that a reliable GSR signal can be obtained without deteriorating the MR image. It is expected that this system can be used for diverse medical and neuroscience studies.
authors.affiliation: Department of Information & Communication Engineering, Dongguk University, Seoul, South Korea.
authors.forename: Dae-Woon
authors.initials: DW
authors.lastname: Lim
authors.forename: Jong-Rak
authors.initials: JR
authors.lastname: Park
authors.forename: Mi-Hyun
authors.initials: MH
authors.lastname: Choi
authors.forename: Soo-Jeong
authors.initials: SJ
authors.lastname: Lee
authors.forename: Jin-Seung
authors.initials: JS
authors.lastname: Choi
authors.forename: Hyung-Sik
authors.initials: HS
authors.lastname: Kim
authors.forename: Jeong-Han
authors.initials: JH
authors.lastname: Yi
authors.forename: Gye-Rae
authors.initials: GR
authors.lastname: Tack
authors.forename: Bongsoo
authors.initials: B
authors.lastname: Lee
authors.forename: Soon-Cheol
authors.initials: SC
authors.lastname: Chung
mesh_terms: D003627:Data Interpretation, Statistical; D005712:Galvanic Skin Response / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000706:statistics & numerical data*; D012815:Signal Processing, Computer-Assisted