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The neuroanatomical correlates of training-related perceptuo-reflex uncoupling in dancers.

Nigmatullina Y, Hellyer PJ, Nachev P, Sharp DJ, Seemungal BM - Cereb. Cortex (2013)

Bottom Line: Adaptation to repeated whole-body rotations, for example, ballet training, is known to reduce vestibular responses.Voxel-based morphometry showed a selective gray matter (GM) reduction in dancers' vestibular cerebellum correlating with ballet experience.Dancers' vestibular cerebellar GM density reduction was related to shorter perceptual responses (i.e. positively correlated) but longer VOR duration (negatively correlated).

View Article: PubMed Central - PubMed

Affiliation: Neuro-Otology Unit, Division of Brain Sciences, Imperial College London, London W6 8RP, UK.

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Related in: MedlinePlus

Results of the WM analysis. (A) Whole-brain correlation analysis revealed significant WM regions, where FA positively correlates with perceptual TCs in both dancers and controls. (B) Significant WM regions in which FA positively correlates with perceptual TCs in controls and negatively correlates with TCs in dancers. (C) A positive correlation between WM FA levels and individual perceptual TC values in a widespread cortical WM network (orange) in the control group only. (A–C) Color bars indicates t values. The inset graphs, with corresponding r values, demonstrate the correlations of the mean FA value of the significant cluster for each subject with perceptual TCs. All significant clusters are shown P < 0.05 (corrected) superimposed on a structural T1-image (gray) and the skeletonized FA image (blue). Sagittal views of the right and left hemispheres are shown for each analysis. The right hemisphere view is of a plane defined by the “x = 26” Talairach coordinate (mm) and the left hemisphere by the “x = −26” Talairach coordinate (mm). Anterior and posterior are as indicated.
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BHT266F4: Results of the WM analysis. (A) Whole-brain correlation analysis revealed significant WM regions, where FA positively correlates with perceptual TCs in both dancers and controls. (B) Significant WM regions in which FA positively correlates with perceptual TCs in controls and negatively correlates with TCs in dancers. (C) A positive correlation between WM FA levels and individual perceptual TC values in a widespread cortical WM network (orange) in the control group only. (A–C) Color bars indicates t values. The inset graphs, with corresponding r values, demonstrate the correlations of the mean FA value of the significant cluster for each subject with perceptual TCs. All significant clusters are shown P < 0.05 (corrected) superimposed on a structural T1-image (gray) and the skeletonized FA image (blue). Sagittal views of the right and left hemispheres are shown for each analysis. The right hemisphere view is of a plane defined by the “x = 26” Talairach coordinate (mm) and the left hemisphere by the “x = −26” Talairach coordinate (mm). Anterior and posterior are as indicated.

Mentions: A whole-brain WM analysis showed a WM cluster (Fig. 4A), where the relationship between FA and perceptual TC was the same for both groups (i.e. here, FA positively correlated with perceptual TCs for both groups with r = 0.50 for dancers and r = 0.81 for controls). The WM cluster was largely within the superior longitudinal fasciculus, with the cluster maximum in the temporo-parietal region [tmax = 4.67, P < 0.05, size = 10 659 voxels (x = −35, y = −27, z = 44 mm); corrected for multiple comparisons]. The temporo-parietal cortex is an area previously proposed to have a prominent role in processing vestibular sensations (zu Eulenburg et al. 2012). Note that no such relationship was found between the groups for ocular motor TCs and cortical FA, in any cortical WM region.Figure 4.


The neuroanatomical correlates of training-related perceptuo-reflex uncoupling in dancers.

Nigmatullina Y, Hellyer PJ, Nachev P, Sharp DJ, Seemungal BM - Cereb. Cortex (2013)

Results of the WM analysis. (A) Whole-brain correlation analysis revealed significant WM regions, where FA positively correlates with perceptual TCs in both dancers and controls. (B) Significant WM regions in which FA positively correlates with perceptual TCs in controls and negatively correlates with TCs in dancers. (C) A positive correlation between WM FA levels and individual perceptual TC values in a widespread cortical WM network (orange) in the control group only. (A–C) Color bars indicates t values. The inset graphs, with corresponding r values, demonstrate the correlations of the mean FA value of the significant cluster for each subject with perceptual TCs. All significant clusters are shown P < 0.05 (corrected) superimposed on a structural T1-image (gray) and the skeletonized FA image (blue). Sagittal views of the right and left hemispheres are shown for each analysis. The right hemisphere view is of a plane defined by the “x = 26” Talairach coordinate (mm) and the left hemisphere by the “x = −26” Talairach coordinate (mm). Anterior and posterior are as indicated.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4380084&req=5

BHT266F4: Results of the WM analysis. (A) Whole-brain correlation analysis revealed significant WM regions, where FA positively correlates with perceptual TCs in both dancers and controls. (B) Significant WM regions in which FA positively correlates with perceptual TCs in controls and negatively correlates with TCs in dancers. (C) A positive correlation between WM FA levels and individual perceptual TC values in a widespread cortical WM network (orange) in the control group only. (A–C) Color bars indicates t values. The inset graphs, with corresponding r values, demonstrate the correlations of the mean FA value of the significant cluster for each subject with perceptual TCs. All significant clusters are shown P < 0.05 (corrected) superimposed on a structural T1-image (gray) and the skeletonized FA image (blue). Sagittal views of the right and left hemispheres are shown for each analysis. The right hemisphere view is of a plane defined by the “x = 26” Talairach coordinate (mm) and the left hemisphere by the “x = −26” Talairach coordinate (mm). Anterior and posterior are as indicated.
Mentions: A whole-brain WM analysis showed a WM cluster (Fig. 4A), where the relationship between FA and perceptual TC was the same for both groups (i.e. here, FA positively correlated with perceptual TCs for both groups with r = 0.50 for dancers and r = 0.81 for controls). The WM cluster was largely within the superior longitudinal fasciculus, with the cluster maximum in the temporo-parietal region [tmax = 4.67, P < 0.05, size = 10 659 voxels (x = −35, y = −27, z = 44 mm); corrected for multiple comparisons]. The temporo-parietal cortex is an area previously proposed to have a prominent role in processing vestibular sensations (zu Eulenburg et al. 2012). Note that no such relationship was found between the groups for ocular motor TCs and cortical FA, in any cortical WM region.Figure 4.

Bottom Line: Adaptation to repeated whole-body rotations, for example, ballet training, is known to reduce vestibular responses.Voxel-based morphometry showed a selective gray matter (GM) reduction in dancers' vestibular cerebellum correlating with ballet experience.Dancers' vestibular cerebellar GM density reduction was related to shorter perceptual responses (i.e. positively correlated) but longer VOR duration (negatively correlated).

View Article: PubMed Central - PubMed

Affiliation: Neuro-Otology Unit, Division of Brain Sciences, Imperial College London, London W6 8RP, UK.

Show MeSH
Related in: MedlinePlus