Development of a magnetic resonance-compatible galvanic skin response measurement system using optic signal

Dae Woon Lim, Jong Rak Park, Mi Hyun Choi, Soo Jeong Lee, Jin Seung Choi, Hyung Sik Kim, Jeong Han Yi, Gye Rae Tack, Bongsoo Lee, Soon Cheol Chung

Research output: Contribution to journalReview articlepeer-review

4 Scopus citations

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.

Original languageEnglish
Pages (from-to)1337-1345
Number of pages9
JournalInternational Journal of Neuroscience
Volume119
Issue number9
DOIs
StatePublished - 2009

Keywords

  • Galvanic skin response
  • Magnetic resonance image
  • Mutual interference effect
  • Optic signal

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