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An interactive multivariate analysis of FCM data

✍ Scribed by Dr. Yukio Kosugi; Ryuichi Sato; Shigeru Genka; Nobuyuki Shitara; Kintomo Takakura


Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
350 KB
Volume
9
Category
Article
ISSN
0196-4763

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✦ Synopsis


The procedure and results of the interactive multivariate analysis of FCM data are described. Using principal-components analysis, cluster analysis, and interactive maneuvers, this procedure facilitates an effective data compression from a four-dimensional space into two-dimensional space, then allows cluster separation. The procedure is especially effective for separating clusters, which are degenerated in the usual scattergrams. Programs were mostly written in C language on MS-DOS and were tested on four-dimensional analysis of the blood cells, which resulted in a successful separation of the degenerated clusters.


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## Abstract This article describes the combination of multivariate Granger causality analysis, temporal down‐sampling of fMRI time series, and graph theoretic concepts for investigating causal brain networks and their dynamics. As a demonstration, this approach was applied to analyze epoch‐to‐epoch