An investigation of the white matter microstructure in motion detection using diffusion MRI
Language English Country Netherlands Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
24833063
DOI
10.1016/j.brainres.2014.05.006
PII: S0006-8993(14)00654-4
Knihovny.cz E-resources
- Keywords
- DTI, MRI, Motion detection, Vision, White matter microstructure,
- MeSH
- Anisotropy MeSH
- White Matter anatomy & histology physiology MeSH
- Differential Threshold physiology MeSH
- Diffusion Magnetic Resonance Imaging MeSH
- Adult MeSH
- Humans MeSH
- Young Adult MeSH
- Brain anatomy & histology physiology MeSH
- Neural Pathways anatomy & histology physiology MeSH
- Psychophysics MeSH
- Photic Stimulation MeSH
- Signal Detection, Psychological physiology MeSH
- Motion Perception physiology MeSH
- Check Tag
- Adult MeSH
- Humans MeSH
- Young Adult MeSH
- Male MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
One of the most widely investigated functions of the brain is vision. Whereas special attention is often paid to motion detection and its modulation by attention, comparatively still little is known about the structural background of this function. We therefore, examined the white matter microstructural background of coherent motion detection. A random-dot kinematogram paradigm was used to measure the sensitivity of healthy individuals׳ to movement coherence. The potential correlation was investigated between the motion detection threshold and the white matter microstructure as measured by high angular resolution diffusion MRI. The Track Based Spatial Statistics method was used to address this correlation and probabilistic tractography to reveal the connection between identified regions. A significant positive correlation was found between the behavioural data and the local fractional anisotropy in the posterior part of the right superior frontal gyrus, the right juxta-cortical superior parietal lobule, the left parietal white matter, the left superior temporal gyrus and the left optic radiation. Probabilistic tractography identified pathways that are highly similar to the segregated attention networks, which have a crucial role in the paradigm. This study draws attention to the structural determinant of a behavioural function.
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