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  • 李小俚老师课题组邀请了美国哈佛大学童云杰助理教授来实验室做学术报告,欢迎感兴趣的老师和同学参加。
    报告题目:Applications of time delay process and its impacts on resting state fMRI
    报告时间:10月19日(周三), 下午14:00
    报告地点:京师大厦9420
    Abstract:Time delay process is based on the observation that many physiological processes (e.g. heart beat) are coupled into the signals of fMRI (i.e. BOLD) and near infrared spectroscopy (e.g. oxyhemoglobin concentration changes) through fluctuations in the blood. Many of these fluctuations are carried by the blood to different parts of the brain and the body. Time delay process is a method to recover these dynamic informations and use them as biomarker to assess human physiology, such as perfusion, or denoising fMRI/fNIRS signal to expose real neuronal activation. Dr. Frederick’s talk will cover this methodology in detail, especially about systemic low frequency oscillations in BOLD signals. In my talk, I will concentrate on how these dynamic physiological signals affect the detection of resting state networks (RSN). Furthermore, I will introduce the methodologies to correct them and improve the accuracy of RSNs.