An investigation of the white matter microstructure in motion detection using diffusion MRI
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
24833063
DOI
10.1016/j.brainres.2014.05.006
PII: S0006-8993(14)00654-4
Knihovny.cz E-zdroje
- Klíčová slova
- DTI, MRI, Motion detection, Vision, White matter microstructure,
- MeSH
- anizotropie MeSH
- bílá hmota anatomie a histologie fyziologie MeSH
- diferenční práh fyziologie MeSH
- difuzní magnetická rezonance MeSH
- dospělí MeSH
- lidé MeSH
- mladý dospělý MeSH
- mozek anatomie a histologie fyziologie MeSH
- nervové dráhy anatomie a histologie fyziologie MeSH
- psychofyzika MeSH
- světelná stimulace MeSH
- teorie detekce signálu fyziologie MeSH
- vnímání pohybu fyziologie MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem 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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