Cited by 18Advanced Neuroimaging Techniques and ApplicationsAdvanced MRI Techniques and ApplicationsFunctional Brain Connectivity Studies

Functional diffusion tensor imaging at 3 Tesla

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Mandl, René·2013·Frontiers in Human Neuroscience

Abstract

In a previous study we reported on a non-invasive functional diffusion tensor imaging (fDTI) method to measure neuronal signals directly from subtle changes in fractional anisotropy along white matter tracts. We hypothesized that these fractional anisotropy changes relate to morphological changes of glial cells induced by axonal activity. In the present study we set out to replicate the results of the previous study with an improved fDTI scan acquisition scheme. A group of twelve healthy human participants were scanned on a 3 Tesla MRI scanner. Activation was revealed in the contralateral thalamo-cortical tract and optic radiations during tactile and visual stimulation, respectively. Mean percent signal change in FA was 3.47% for the tactile task and 3.79% for the visual task, while for the MD the mean percent signal change was only -0.10 and -0.09%. The results support the notion of different response functions for tactile and visual stimuli. With this study we successfully replicated our previous findings using the same types of stimuli but on a different group of healthy participants and at different field-strength. The successful replication of our first fDTI results suggests that the non-invasive fDTI method is robust enough to study the functional neural networks in the human brain within a practically feasible time period.

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  1. Gulani V. Iwamoto G. A. Lauterbur P. C. (1999). Apparent water diffusion measurements in electrically stimulated neural tissue. Magn. Reson. Med. 41 241– 246 10.1002/(SICI)1522-2594(199902)41:2<241::AID-MRM5>3.0.CO;2-E 10080269 · DOI

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Authors
Mandl, R.
Affiliations
University Medical Center Utrecht (NL)
Corresponding author
Mandl, René
Venue
Frontiers in Human Neuroscience
Published
2013
Volume
7
Pages
817-817
ISSN
1662-5161 (ISSN-L)
OpenAlex
W2072081641
Cited by
18
References
55
Citations by year
2023: 1 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 2 · 2017: 4 · 2015: 2 · 2014: 5
FWCI
1.81
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Human Neuroscience (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (917.46.370)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
Keywords
fractional anisotropy, white matter tracts, thalamocortical tract, optic radiation, tactile stimulation, visual stimulation, mean diffusivity, 3T MRI

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