Sleep control depends on a delicate interplay among brain regions. This generates a complex temporal architecture with numerous sleep-stage transitions and intermittent fluctuations to micro-states and brief arousals. These temporal dynamics exhibit hallmarks of criticality, suggesting that tuning to criticality is essential for spontaneous sleep-stage and arousal transitions.
View Article and Find Full Text PDFNon-small cell lung cancer (NSCLC) is still one of the most challenging malignant tumors. Deregulation of circular RNAs (circRNAs) is associated with NSCLC progression. However, the regulatory mechanism of circRNAs in NSCLC still needs to be studied.
View Article and Find Full Text PDFBackground: Thymoma is the most common malignant tumor in anterior mediastinum, and its specific pathogenesis is still unclear. This limits the study of targeted drugs for thymoma. The aim of the study is to investigate the genes and signal pathways of thymoma, and provide help for the research of thymic tumor pathogenesis using the technology of second-generation genechip to analyze thymoma.
View Article and Find Full Text PDFThe second-order difference plot, as a modified Poincaré plot, is one of the important approaches for assessing the dynamics of heart rate variability. However, corresponding quantitative analysis methods are relatively limited. Based on the second-order difference plot, we propose a novel method, called the multi-scale feedback ratio analysis, which can measure the feedback properties of heart rate fluctuations on different temporal scales.
View Article and Find Full Text PDFPhys Rev E Stat Nonlin Soft Matter Phys
January 2013
Symbolic dynamics method and time reversal asymmetry analysis are both important approaches in the study of heartbeat interval series. However, there is limited research work reported on combining these two methods. We provide a method of time reversal asymmetry analysis which focuses on the differences between the forward and backward embedding "m words" after the operation of equiprobable symbolization.
View Article and Find Full Text PDFObjective: To evaluate the mid-, and long-term effects of video-assisted thoracoscopic thymectomy and transsternal thymectomy in treatment of myasthenia gravis (MG) and to identify the prognostic factors for thymectomy success.
Methods: 161 patients with non-thymomatous MS, 84 males and 120 females, aged 33, underwent transsternal thymectomy and were followed up for 5 years; and 43 patients with non-thymomatous MS A retrospective, 1 male and 25 females, 21 being aged >40 during operation, underwent thoracoscopic thymectomy and were followed up for 3 years.
Results: The mean operating time of the thoracoscopic group was (132 +/- 32) min minutes, significantly longer than that of the transsternal thymectomy group [(96 +/- 18) min, P = 0.
Zhongguo Yi Liao Qi Xie Za Zhi
March 2007
In this paper, a design of the portable acquisition system for autonomic nervous function data based on the microcontroller is introduced. The system contains an electrocardiogram amplifier and an AD convertor, using SD memory card as its storage device and thus it can record data for a longer time and exchange data with PC easily. The system with a simple structure realizes its miniaturization and low energy consumption.
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