7 research outputs found

    Near-infrared spectroscopy(NIRS)を用いたBrain-Machine Interface(BMI)システムにおけるセンサ装着位置の検討

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    先行研究で、国際10-20法のF8、Fz、F7 における計測データの性差や左右差について詳細な解析を行ったものが少ないことから、本研究では、センサ装着位置を検討するため、F8、Fz、F7 の左右性指標に基づく緩変化値と脈波成分について、表計算ソフト(Microsoft Excel 2010)のデータ分析機能を用いて性差を含めた解析および比較を行い、開発を進めているBMI システムの応用性評価、計測データの統計処理方法、脳活動情報検出法のNIRS について検討した。解析結果より、脳活動時の神経伝達・左右半球処理など、各種処理には性差がある可能性が示唆された。このことから、本研究で採用した統計処理方法は、簡単に解析を行うことができ、開発を進めているBMI システムの応用性評価、センサの位置決め、BMI への応用・導入につながる基礎的な統計処理方法として有意義であると考える。今後、本研究で採用した解析方法だけではなく、多元配置分散分析を用いて交互作用など詳細な解析を行う必要があると考える。また、ECG、EEG、カプノメータなどを同時に使用した計測から、計測データの解析を行い、各種ノイズ解析および除去方法さらに脳内モード・ネットワークとのインターフェースについて、センサの位置決めや心拍変動パタンはじめ新たな生体情報の有効性などに関する検討を課題とする

    Association between a Single-Nucleotide Polymorphism in the Promoter of the Human Interleukin-3 Gene and Rheumatoid Arthritis in Japanese Patients, and Maximum-Likelihood Estimation of Combinatorial Effect That Two Genetic Loci Have on Susceptibility to the Disease

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    Genetic variants of interleukin-3 (IL-3), a well-studied cytokine, may have a role in the pathophysiology of rheumatoid arthritis (RA); but reports on this association sometimes conflict. A case-control study was designed to investigate association between RA and a single-nucleotide polymorphism (SNP) in the IL-3 promoter region. Comparison of cases of RA versus control individuals yielded a χ(2) value of 14.28 (P=.0002), with a genotype odds ratio of 2.24 (95% confidence interval [95%CI] 1.44–3.49). When female cases with earlier onset were compared with female control individuals, the SNP revealed an even more significant correlation, with χ(2)=21.75 (P=.000004) and a genotype odds ratio of 7.27 (95%CI 2.80–18.89). The stronger association that we observed in this clinically distinct subgroup (females with early onset), within a region where linkage disequilibrium was not significantly extended, suggested that the genuine RA locus should locate either within or close to the IL-3 gene. Combined genotype data on SNPs on eight other candidate genes were combined with our IL-3 results, to estimate relationships between pairs of loci and RA, by maximum-likelihood analysis. The utility of combining the genotype data in this way to identify possible contributions of various genes to this disease is discussed

    Outcomes in Newly Diagnosed Atrial Fibrillation and History of Acute Coronary Syndromes: Insights from GARFIELD-AF

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    BACKGROUND: Many patients with atrial fibrillation have concomitant coronary artery disease with or without acute coronary syndromes and are in need of additional antithrombotic therapy. There are few data on the long-term clinical outcome of atrial fibrillation patients with a history of acute coronary syndrome. This is a 2-year study of atrial fibrillation patients with or without a history of acute coronary syndromes
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