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

2018 ◽  
Vol 512 ◽  
pp. 756-762
Author(s):  
Salim Lahmiri
Keyword(s):  
Visual Cortex ◽  
Resting State ◽  
Resting State Fmri ◽  
Human Visual Cortex ◽  
Spontaneous Fluctuations

scholarly journals Resting state fMRI in pre-surgical brain mapping. Literature review

2018 ◽  
pp. 6-13 ◽  
Author(s):  
A. S. Smirnov ◽  
M. G. Sharaev ◽  
T. V. Melnikova-Pitskhelauri ◽  
V. Yu. Zhukov ◽  
A. E. Bikanov ◽  
...  
Keyword(s):  
Brain Mapping ◽  
Resting State ◽  
Preoperative Planning ◽  
Clinical Information ◽  
Complete Information ◽  
Resting State Fmri ◽  
Blood Oxygen Level Dependent ◽  
Blood Oxygen Level ◽  
Spontaneous Fluctuations ◽  
The Brain

Today, functional magnetic resonance imaging (fMRI) allows to plan surgery based on the topography of functionally important areas of the human brain cortex and tumor. This method can complement the surgical strategy with significant clinical information. The stimulus-dependent fMRI with motor and language paradigms is generally used for preoperative planning. The study outcome depends on the patient's ability to perform tasks paradigm, which is broken in brain tumors. In an attempt to overcome this problem, resting-state fMRI (rs-fMRI) is used for brain mapping. Rs-fMRI is based on the measurement of spontaneous fluctuations of the BOLD signal (blood oxygen level-dependent), representing the functional structure of the brain. In contrast to stimulus-dependent fMRI, rs-fMRI provides more complete information about functional architecture of the brain. rs-fMRI is used in conditions where the results of stimulusdependent fMRI may be falsely positive or in the absence of the possibility of its implementation. In aggregate, both methods significantly expand the efficiency and specificity of preoperative planning.

Periventricular Areas Anti-Correlate with Visual Cortex in Resting-State fMRI

NeuroImage ◽  
2009 ◽  
Vol 47 ◽  
pp. S60
Author(s):  
M Bianciardi ◽  
M Fukunaga ◽  
JH Duyn
Keyword(s):  
Visual Cortex ◽  
Resting State ◽  
Resting State Fmri

scholarly journals Human Connectome Project resting state fMRI data organized into 60 fine-scaled retinotopically organized regions in cortical areas V1, V2 and V3

2018 ◽  
Author(s):  
Debra Ann Dawson ◽  
Zixuan Yin ◽  
Jack Lam ◽  
Amir Shmuel
Keyword(s):  
Visual Cortex ◽  
Resting State ◽  
Resting State Fmri ◽  
Regions Of Interest ◽  
Fmri Data ◽  
Cortical Areas ◽  
Human Connectome Project ◽  
Public Data ◽  
Visual Areas ◽  
Data Release

AbstractThe data comprises 60 regions of interest (ROIs) from V1, V2, and V3 of the human visual cortex. Preprocessed data from the Human Connectome Project (HCP) 900 subjects public data release were utilized: 220 subjects were randomly selected, each with 4 scans of resting state fMRI data. Given that these subjects did not have retinotopy scans performed, the visual areas were defined using an anatomical template from Benson et al. (2014). Visual areas from each hemisphere were further divided along dorsal-ventral lines into quadrants, resulting in 4 quadrants per subject. Within each quadrant, fine scaled ROIs were defined by subdividing each visual area into 5 regions according to eccentricity. These data may be useful for studying retinotopically organized functional connectivity in the visual cortex using the HCP 3 Tesla dataset.

scholarly journals Concordance of Resting-State vs Task-Based FMRI Maps of Human Visual Cortex

2016 ◽  
Vol 16 (12) ◽  
pp. 881
Author(s):  
Edgar DeYoe ◽  
Ryan Raut ◽  
David Ritchie ◽  
Jed Mathis
Keyword(s):  
Visual Cortex ◽  
Resting State ◽  
Human Visual Cortex

scholarly journals Brief Postnatal Visual Deprivation Triggers Long-Lasting Interactive Structural and Functional Reorganization of the Human Cortex

2021 ◽  
Vol 8 ◽  
Author(s):  
Yixuan Feng ◽  
Olivier Collignon ◽  
Daphne Maurer ◽  
Ke Yao ◽  
Xiaoqing Gao
Keyword(s):  
Visual Cortex ◽  
Cortical Thickness ◽  
Resting State ◽  
Resting State Fmri ◽  
Visual Deprivation ◽  
Congenital Cataracts ◽  
Human Cortex ◽  
Functional Reorganization ◽  
Unique Model

Patients treated for bilateral congenital cataracts provide a unique model to test the role of early visual input in shaping the development of the human cortex. Previous studies showed that brief early visual deprivation triggers long-lasting changes in the human visual cortex. However, it remains unknown if such changes interact with the development of other parts of the cortex. With high-resolution structural and resting-state fMRI images, we found changes in cortical thickness within, but not limited to, the visual cortex in adult patients, who experienced transient visual deprivation early in life as a result of congenital cataracts. Importantly, the covariation of cortical thickness across regions was also altered in the patients. The areas with altered cortical thickness in patients also showed differences in functional connectivity between patients and normally sighted controls. Together, the current findings suggest an impact of early visual deprivation on the interactive development of the human cortex.

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