The neuroanatomical correlates of training-related perceptuo-reflex uncoupling in dancers.
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).
Affiliation: Neuro-Otology Unit, Division of Brain Sciences, Imperial College London, London W6 8RP, UK.Show MeSH
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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.
Affiliation: Neuro-Otology Unit, Division of Brain Sciences, Imperial College London, London W6 8RP, UK.