11249

10340

كارشناسي ارشد

ماده چگال

اصفهان: دانشگاه صنعتي اصفهان، دانشكده فيزيك

1394

دوازده،62ص.: مصور

1395/02/19

فيزيك

ID10340

Study on criticality and fractal properties in human brain by fMRI technique Zeynab Rashidpour rashidpourz@gmail com January 3 2016 Department of Physics Isfahan University of Technology Isfahan 84156 83111 Iran University Code IUT 77142 Degree M Sc Language Farsi supervisor Dr F Shahbazi Dr H Seyed allaei Shahbazi@cc iut ac ir Hamed@ipm ir Abstract Nowadays brain is explored through various methods as one of the most complex systems FMRI technique is based on continuous change in brain blood oxygenated level and contributes remarkably to our understanding of its activity Data collected by fMRI technique provides more comprehensive spatial information in comparison to other methods The main goal of the study is analysis of criticality in brain by means of fMRI In this study critical state is investigated by forming network of brain and applying a specific dynamic on it Brain activity indicates multifractality in resting state in which the subject is still with closed eyes Calculation of some fractal variables shows the same result for healthy and schizophrenic brain in resting state Keywords fMRI Technique Criticality Brain Network Multifractal

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