一种用于fMRI的温度觉刺激装置的设计与验证
收稿日期: 2015-04-02
修回日期: 2016-01-22
网络出版日期: 2016-03-05
基金资助
中科院科研装备研制资助项目(YZ201253),江苏省自然科学基金资助项目(BK20131171).
Design and Evaluation of a Caloric Stimulation Device for fMRI Studies
Received date: 2015-04-02
Revised date: 2016-01-22
Online published: 2016-03-05
介绍了一种用于功能磁共振成像(fMRI)的温度觉刺激装置的设计与验证,该装置能够用于fMRI温度觉的脑功能研究,满足温度觉fMRI实验的自动化刺激要求.整个刺激装置设计了以微控制器为核心的控制电路,通过数据采集卡能够与上位机LabVIEW软件进行数据通讯,并将获取的数据通过特定的串口协议传递给数字PID温控模块,实现对刺激端温度的精确调控.最后,使用该刺激装置对多名被试进行了温度觉的脑功能实验,实验结果验证了该设计的可行性.
关键词： 功能磁共振成像(fMRI); 刺激装置; LabVIEW; 温度觉刺激
董涛 , 梁思 , 王慧 , 杨晓冬 . 一种用于fMRI的温度觉刺激装置的设计与验证[J]. 波谱学杂志, 2016 , 33(1) : 54 -65 . DOI: 10.11938/cjmr20160105
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
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