Chinese Journal of Magnetic Resonance ›› 2016, Vol. 33 ›› Issue (1): 54-65.doi: 10.11938/cjmr20160105

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Design and Evaluation of a Caloric Stimulation Device for fMRI Studies

DONG Tao1,2,3, LIANG Si1,2,3, WANG Hui3, YANG Xiao-dong3   

  1. 1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
  • Received:2015-04-02 Revised:2016-01-22 Online:2016-03-05 Published:2016-03-05

Abstract:

In this study, we designed and verified a computer-controlled caloric stimulation device for delivering caloric stimulation in functional magnetic resonance imaging (fMRI) environment. The stimulation device consists of a caloric stimulation generation unit and a control unit. The control system unit includes a microcontroller module which can process stimulation command written in LabVIEW, and then transfer the stimulation sequence to a digital PID temperature control module to achieve exact caloric stimulation via a small peltier-pod. The performance of the device was evaluated with caloric stimulation fMRI experiments, and the results from 5 test subjects demonstrated the reliability of the device.

Key words: fMRI, stimulation device, LabVIEW, caloric stimulation

CLC Number: