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Redundancy as a Graph-Based Index of Frequency Specific MEG Functional Connectivity
المؤلفون المشاركون
Marzetti, Laura
De Vico Fallani, Fabrizio
Zappasodi, Filippo
Di Lanzo, Claudia
Pizzella, Vittorio
المصدر
Computational and Mathematical Methods in Medicine
العدد
المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2012-10-16
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
الملخص EN
We used a recently proposed graph index to investigate connectivity redundancy in resting state MEG recordings.
Usually, brain network analyses consider indexes linked to the shortest paths between cerebral regions.
However, important information might be lost about alternative trails by neglecting longer pathways.
We measured the redundancy of the connectivity by considering the multiple paths at the global level (i.e., scalar redundancy), across different path lengths (i.e., vector redundancy), and between node pairs (i.e., matrix redundancy).
We applied this approach to a robust frequency domain functional connectivity measure, the corrected imaginary part of coherence.
The redundancy in the MEG networks, for each frequency band, was significantly (P<0.05) higher than in the random graphs, thus, confirming a natural tendency of the brain to present multiple interaction pathways between different specialized areas.
Notably, this difference was more evident and localized among the channels covering the parietooccipital areas in the alpha range of MEG oscillations (7.5–13 Hz), as expected in the resting state conditions.
Interestingly enough, the results obtained with the redundancy indexes were poorly correlated with those obtained using shortest paths only, and more sensitive with respect to those obtained by considering walk-based indexes.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Di Lanzo, Claudia& Marzetti, Laura& Zappasodi, Filippo& De Vico Fallani, Fabrizio& Pizzella, Vittorio. 2012. Redundancy as a Graph-Based Index of Frequency Specific MEG Functional Connectivity. Computational and Mathematical Methods in Medicine،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-454537
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Di Lanzo, Claudia…[et al.]. Redundancy as a Graph-Based Index of Frequency Specific MEG Functional Connectivity. Computational and Mathematical Methods in Medicine No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-454537
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Di Lanzo, Claudia& Marzetti, Laura& Zappasodi, Filippo& De Vico Fallani, Fabrizio& Pizzella, Vittorio. Redundancy as a Graph-Based Index of Frequency Specific MEG Functional Connectivity. Computational and Mathematical Methods in Medicine. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-454537
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-454537
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