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The plasticity of the superior longitudinal fasciculus as a function of musical expertise: a diffusion tensor imaging study.

Oechslin MS, Imfeld A, Loenneker T, Meyer M, Jäncke L - Front Hum Neurosci (2010)

Bottom Line: Using DTI, we analysed the fractional anisotropy (FA) of the superior longitudinal fasciculus (SLF), which is considered the most primary pathway for processing and production of speech and music.In association with different levels of musical expertise, we found that AP is characterized by a greater left than right asymmetry of FA in core fibres of the SLF.We therefore conclude that the SLF architecture in AP musicians is related to AP acuity.

View Article: PubMed Central - PubMed

Affiliation: Department of Neuropsychology, Division of Psychology, University of Zurich Zurich, Switzerland.

ABSTRACT
Previous neuroimaging studies have demonstrated that musical expertise leads to functional alterations in language processing. We utilized diffusion tensor imaging (DTI) to investigate white matter plasticity in musicians with absolute pitch (AP), relative pitch and non-musicians. Using DTI, we analysed the fractional anisotropy (FA) of the superior longitudinal fasciculus (SLF), which is considered the most primary pathway for processing and production of speech and music. In association with different levels of musical expertise, we found that AP is characterized by a greater left than right asymmetry of FA in core fibres of the SLF. A voxel-based analysis revealed three clusters within the left hemisphere SLF that showed significant positive correlations with error rates only for AP-musicians in an AP-test, but not for musicians without AP. We therefore conclude that the SLF architecture in AP musicians is related to AP acuity. In order to reconcile our observations with general aspects of development of fibre bundles, we introduce the Pioneer Axon Thesis, a theoretical approach to formalize axonal arrangements of major white matter pathways.

No MeSH data available.


A 3-D model of the left SLF of a single subject is displayed. The red areas indicate the anterior and posterior ROI used for creating the SLF fibre subset. Only fibres running through both ROIs are considered to be part of the tracked fibre structure.
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Figure 1: A 3-D model of the left SLF of a single subject is displayed. The red areas indicate the anterior and posterior ROI used for creating the SLF fibre subset. Only fibres running through both ROIs are considered to be part of the tracked fibre structure.

Mentions: According to the described fibre tracking strategy by Mori et al. (2002) a multi-ROI approach in MNI space was used to select the SLF fibre structure. As depicted in Figure 1 we used two spatially separated ROIs to reconstruct the whole SLF pathway (Catani et al., 2007) – this procedure covers both the indirect (parietal-frontal-projection) and direct pathway (temporo-parieto-frontal projection).


The plasticity of the superior longitudinal fasciculus as a function of musical expertise: a diffusion tensor imaging study.

Oechslin MS, Imfeld A, Loenneker T, Meyer M, Jäncke L - Front Hum Neurosci (2010)

A 3-D model of the left SLF of a single subject is displayed. The red areas indicate the anterior and posterior ROI used for creating the SLF fibre subset. Only fibres running through both ROIs are considered to be part of the tracked fibre structure.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2821183&req=5

Figure 1: A 3-D model of the left SLF of a single subject is displayed. The red areas indicate the anterior and posterior ROI used for creating the SLF fibre subset. Only fibres running through both ROIs are considered to be part of the tracked fibre structure.
Mentions: According to the described fibre tracking strategy by Mori et al. (2002) a multi-ROI approach in MNI space was used to select the SLF fibre structure. As depicted in Figure 1 we used two spatially separated ROIs to reconstruct the whole SLF pathway (Catani et al., 2007) – this procedure covers both the indirect (parietal-frontal-projection) and direct pathway (temporo-parieto-frontal projection).

Bottom Line: Using DTI, we analysed the fractional anisotropy (FA) of the superior longitudinal fasciculus (SLF), which is considered the most primary pathway for processing and production of speech and music.In association with different levels of musical expertise, we found that AP is characterized by a greater left than right asymmetry of FA in core fibres of the SLF.We therefore conclude that the SLF architecture in AP musicians is related to AP acuity.

View Article: PubMed Central - PubMed

Affiliation: Department of Neuropsychology, Division of Psychology, University of Zurich Zurich, Switzerland.

ABSTRACT
Previous neuroimaging studies have demonstrated that musical expertise leads to functional alterations in language processing. We utilized diffusion tensor imaging (DTI) to investigate white matter plasticity in musicians with absolute pitch (AP), relative pitch and non-musicians. Using DTI, we analysed the fractional anisotropy (FA) of the superior longitudinal fasciculus (SLF), which is considered the most primary pathway for processing and production of speech and music. In association with different levels of musical expertise, we found that AP is characterized by a greater left than right asymmetry of FA in core fibres of the SLF. A voxel-based analysis revealed three clusters within the left hemisphere SLF that showed significant positive correlations with error rates only for AP-musicians in an AP-test, but not for musicians without AP. We therefore conclude that the SLF architecture in AP musicians is related to AP acuity. In order to reconcile our observations with general aspects of development of fibre bundles, we introduce the Pioneer Axon Thesis, a theoretical approach to formalize axonal arrangements of major white matter pathways.

No MeSH data available.