Causal influences between spontaneous fluctuations in resting state fMRI of central and peripheral eccentricity representations in the human visual cortex

Salim Lahmiri

Physica A: Statistical Mechanics and its Applications, 2018, vol. 512, issue C, 756-762

Abstract: Functional magnetic resonance imaging (fMRI) is widely used to study and understand interactions between brain structures. The purpose of our work is to examine contemporaneous relationships between central and peripheral eccentricity signals within and between visual areas of the human visual cortex to better understand functional connectivity in this region of human brain. Indeed, based on the analysis of a large set of fMRI signals, it was concluded that there is only a limited connectivity between central and peripheral eccentricity bands within the first and second visual areas; but, there is no evidence of connectivity between those eccentricity bands within the third visual area. In addition, it was found that the effects of central eccentricity signals on peripheral ones are extremely large in visual areas V1 and V2. Conversely, the effects of peripheral eccentricity bands on central ones are small in all visual areas. The obtained results are a further step toward understanding the organization of spontaneous activity in visual cortical regions of the human brain.

Keywords: Resting state functional magnetic resonance imaging; Spontaneous activity; Human visual cortex; Eccentricity band; Resting state functional connectivity (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378437118309890
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:512:y:2018:i:c:p:756-762

DOI: 10.1016/j.physa.2018.08.041

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().