scholarly journals Altered white matter structure in the visual system following early monocular enucleation

2017 ◽  
Vol 39 (1) ◽  
pp. 133-144 ◽  
Author(s):  
Nikita A. Wong ◽  
Sara A. Rafique ◽  
Krista R. Kelly ◽  
Stefania S. Moro ◽  
Brenda L. Gallie ◽  
...  
Keyword(s):  
White Matter ◽  
Visual System ◽  
Monocular Enucleation

scholarly journals Auditory and Visual System White Matter Is Differentially Impacted by Normative Aging in Macaques

2020 ◽  
Vol 40 (46) ◽  
pp. 8913-8923
Author(s):  
Daniel T. Gray ◽  
Nicole M. De La Peña ◽  
Lavanya Umapathy ◽  
Sara N. Burke ◽  
James R. Engle ◽  
...  
Keyword(s):  
White Matter ◽  
Visual System ◽  
Normative Aging

Organization of cortical afferent and efferent pathways in the white matter of the rat visual system

Neuroscience ◽  
1990 ◽  
Vol 36 (2) ◽  
pp. 393-401 ◽  
Author(s):  
W.R. Woodward ◽  
N. Chiaia ◽  
T.J. Teyler ◽  
L. Leong ◽  
B.M. Coull
Keyword(s):  
White Matter ◽  
Visual System ◽  
Efferent Pathways

scholarly journals White matter alterations in glaucoma and monocular blindness differ outside the visual system

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sandra Hanekamp ◽  
Branislava Ćurčić-Blake ◽  
Bradley Caron ◽  
Brent McPherson ◽  
Anneleen Timmer ◽  
...  
Keyword(s):  
Motor Control ◽  
White Matter ◽  
Visual System ◽  
Visual Loss ◽  
Indirect Evidence ◽  
Sensory Inputs ◽  
White Matter Microstructure ◽  
Early Visual System ◽  
Patient Groups ◽  
The Brain

AbstractThe degree to which glaucoma has effects in the brain beyond the eye and the visual pathways is unclear. To clarify this, we investigated white matter microstructure (WMM) in 37 tracts of patients with glaucoma, monocular blindness, and controls. We used brainlife.io for reproducibility. White matter tracts were subdivided into seven categories ranging from those primarily involved in vision (the visual white matter) to those primarily involved in cognition and motor control. In the vision tracts, WMM was decreased as measured by fractional anisotropy in both glaucoma and monocular blind subjects compared to controls, suggesting neurodegeneration due to reduced sensory inputs. A test–retest approach was used to validate these results. The pattern of results was different in monocular blind subjects, where WMM properties increased outside the visual white matter as compared to controls. This pattern of results suggests that whereas in the monocular blind loss of visual input might promote white matter reorganization outside of the early visual system, such reorganization might be reduced or absent in glaucoma. The results provide indirect evidence that in glaucoma unknown factors might limit the reorganization as seen in other patient groups following visual loss.

Control of cell number in the developing visual system. I. Effects of monocular enucleation

1986 ◽  
Vol 28 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Barbara L. Finlay ◽  
Dale R. Sengelaub ◽  
Claire A. Berian
Keyword(s):  
Visual System ◽  
Cell Number ◽  
Monocular Enucleation

scholarly journals Altered anterior visual system development following early monocular enucleation

2014 ◽  
Vol 4 ◽  
pp. 72-81 ◽  
Author(s):  
Krista R. Kelly ◽  
Larissa McKetton ◽  
Keith A. Schneider ◽  
Brenda L. Gallie ◽  
Jennifer K.E. Steeves
Keyword(s):  
Visual System ◽  
System Development ◽  
Monocular Enucleation ◽  
Visual System Development

scholarly journals Establishing the functional relevancy of white matter connections in the visual system and beyond

2021 ◽  
Author(s):  
Mareike Grotheer ◽  
Emily Kubota ◽  
Kalanit Grill-Spector
Keyword(s):  
White Matter ◽  
Visual System ◽  
Large Scale ◽  
Functional Organization ◽  
Temporal Cortex ◽  
Fine Grained ◽  
Brain Functions ◽  
Functional Relationships ◽  
Functional Regions ◽  
The Brain

AbstractFor over a century, researchers have examined the functional relevancy of white matter bundles. Consequently, many large-scale bundles spanning several centimeters have been associated in their entirety with specific brain functions, such as language or attention. However, these coarse structural–functional relationships are at odds with modern understanding of the fine-grained functional organization of human cortex, such as the mosaic of category-selective regions in ventral temporal cortex. Here, we review a multimodal approach that combines fMRI to define functional regions of interest within individual’s brains with dMRI tractography to identify the white matter bundles of the same individual. Combining these data allows to determine which subsets of streamlines within a white matter bundle connect to specific functional regions in each individual. That is, this approach identifies the functionally defined white matter sub-bundles of the brain. We argue that this approach not only enhances the accuracy of interpreting the functional relevancy of white matter bundles, but also enables segmentation of these large-scale bundles into meaningful functional units, which can then be linked to behavior with enhanced precision. Importantly, this approach has the potential for making new discoveries of the fine-grained functional relevancy of white matter connections in the visual system and the brain more broadly, akin to the flurry of research that has identified functional regions in cortex.

scholarly journals Altered white matter structure in auditory tracts following early monocular enucleation

2019 ◽  
Vol 24 ◽  
pp. 102006 ◽  
Author(s):  
Nikita A. Wong ◽  
Sara A. Rafique ◽  
Stefania S. Moro ◽  
Krista R. Kelly ◽  
Jennifer K.E. Steeves
Keyword(s):  
White Matter ◽  
Monocular Enucleation
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