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Functional localization of the human color center by decreased water displacement using diffusion‐weighted fMRI

Overview of attention for article published in Brain and Behavior, October 2015
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Title
Functional localization of the human color center by decreased water displacement using diffusion‐weighted fMRI
Published in
Brain and Behavior, October 2015
DOI 10.1002/brb3.408
Pubmed ID
Authors

Rebecca J Williams, David C Reutens, Julia Hocking

Abstract

Decreased water displacement following increased neural activity has been observed using diffusion-weighted functional MRI (DfMRI) at high b-values. The physiological mechanisms underlying the diffusion signal change may be unique from the standard blood oxygenation level-dependent (BOLD) contrast and closer to the source of neural activity. Whether DfMRI reflects neural activity more directly than BOLD outside the primary cerebral regions remains unclear. Colored and achromatic Mondrian visual stimuli were statistically contrasted to functionally localize the human color center Area V4 in neurologically intact adults. Spatial and temporal properties of DfMRI and BOLD activation were examined across regions of the visual cortex. At the individual level, DfMRI activation patterns showed greater spatial specificity to V4 than BOLD. The BOLD activation patterns were more prominent in the primary visual cortex than DfMRI, where activation was localized to the ventral temporal lobe. Temporally, the diffusion signal change in V4 and V1 both preceded the corresponding hemodynamic response, however the early diffusion signal change was more evident in V1. DfMRI may be of use in imaging applications implementing cognitive subtraction paradigms, and where highly precise individual functional localization is required.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 23 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 23 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 4 17%
Student > Master 4 17%
Researcher 3 13%
Student > Ph. D. Student 3 13%
Student > Postgraduate 2 9%
Other 4 17%
Unknown 3 13%
Readers by discipline Count As %
Neuroscience 7 30%
Engineering 3 13%
Medicine and Dentistry 3 13%
Psychology 2 9%
Physics and Astronomy 2 9%
Other 3 13%
Unknown 3 13%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 30 July 2021.
All research outputs
#19,944,091
of 25,373,627 outputs
Outputs from Brain and Behavior
#2,282
of 2,792 outputs
Outputs of similar age
#199,294
of 291,148 outputs
Outputs of similar age from Brain and Behavior
#14
of 28 outputs
Altmetric has tracked 25,373,627 research outputs across all sources so far. This one is in the 18th percentile – i.e., 18% of other outputs scored the same or lower than it.
So far Altmetric has tracked 2,792 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 8.4. This one is in the 16th percentile – i.e., 16% of its peers scored the same or lower than it.
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We're also able to compare this research output to 28 others from the same source and published within six weeks on either side of this one. This one is in the 42nd percentile – i.e., 42% of its contemporaries scored the same or lower than it.