Collective Correlations of Brodmann Areas fMRI Study with RMT-Denoising
نویسندگان
چکیده
1: M. Smoluchowski Institute of Physics, Jagiellonian University, PL–30–059 Cracow, Poland 2: Mark Kac Center for Complex Systems Research, Jagiellonian University, PL–30–059 Cracow, Poland 3: University of Winnipeg, Winnipeg, Manitoba, Canada 4: Alberta Innovates, Winnipeg, Manitoba, Canada 5: Thunder Bay Regional Research Institute, Thunder Bay, Ontario, Canada Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland Alberta Innovates Technology Futures, Calgary, Alberta, Canada
منابع مشابه
Time-lag cross-correlations in collective phenomena
We study long-range magnitude cross-correlations in collective modes of real-world data from finance, physiology, and genomics using time-lag random matrix theory. We find longrange magnitude cross-correlations i) in time series of price fluctuations, ii) in physiological time series, both healthy and pathological, indicating scale-invariant interactions between different physiological time ser...
متن کاملAPPLICATION OF THE RANDOM MATRIX THEORY ON THE CROSS-CORRELATION OF STOCK PRICES
The analysis of cross-correlations is extensively applied for understanding of interconnections in stock markets. Variety of methods are used in order to search stock cross-correlations including the Random Matrix Theory (RMT), the Principal Component Analysis (PCA) and the Hierachical Structures. In this work, we analyze cross-crrelations between price fluctuations of 20 company stocks...
متن کاملImprovement of clinical language localization with an overt semantic and syntactic language functional MR imaging paradigm.
BACKGROUND AND PURPOSE Functional MR imaging (fMRI) is a promising but, in some aspects, still debated noninvasive tool for functional language mapping. We developed a clinical fMRI overt language design at the sentential level to optimize sensitivity for language-related areas of the brain. To evaluate applicability and sensitivity, we investigated a consecutive series of presurgical patients ...
متن کاملLarge scale cross-correlations in Internet traffic.
The Internet is a complex network of interconnected routers, and the existence of a collective behavior such as congestion suggests that the correlations between the different connections play a crucial role. It is thus critical to measure and quantify these correlations. We use methods of random matrix theory (RMT) to analyze the cross-correlation matrix C of information flow changes of 650 co...
متن کاملBrain Deactivation in the Outperformance in Bimodal Tasks: An fMRI Study
While it is known that some individuals can effectively perform two tasks simultaneously, other individuals cannot. How the brain deals with performing simultaneous tasks remains unclear. In the present study, we aimed to assess which brain areas corresponded to various phenomena in task performance. Nineteen subjects were requested to sequentially perform three blocks of tasks, including two u...
متن کامل