User profiles for T. Loenneker

Thomas Loenneker

Senior Director
Verified email at loenneker.org
Cited by 4007

[HTML][HTML] Impaired neural networks for approximate calculation in dyscalculic children: a functional MRI study

K Kucian, T Loenneker, T Dietrich, M Dosch… - Behavioral and Brain …, 2006 - Springer
… When comparing mean ΔS and mean t-values between children with or without DD in
each ROI by t-tests, significant differences or trends for differences in mean t-values were …

Optimized voxel-based morphometry in children with developmental dyscalculia

…, E Martin, M von Aster, P Klaver, T Loenneker - Neuroimage, 2008 - Elsevier
… Magnetic resonance imaging was obtained from 12 children with DD aged 9.3±0.2 years
and 12 age-matched control children without any learning disabilities on a 1.5 T whole-body …

White matter plasticity in the corticospinal tract of musicians: a diffusion tensor imaging study

A Imfeld, MS Oechslin, M Meyer, T Loenneker… - Neuroimage, 2009 - Elsevier
… Group comparisons were based on independent-samples t-tests and hemispheric laterality
effects were examined using paired-samples t-tests. For slicewise analysis, ROIs for the left …

Dysfunctional neural network of spatial working memory contributes to developmental dyscalculia

S Rotzer, T Loenneker, K Kucian, E Martin, P Klaver… - Neuropsychologia, 2009 - Elsevier
… First, we computed one sample t-tests for each group to reveal activations for spatial …
Second, to detect the effect of DD, we computed group comparisons with two sample t-tests …

Children with dyslexia lack multiple specializations along the visual word-form (VWF) system

…, S Brem, J Buckelmüller, M Kronbichler, T Loenneker… - Neuroimage, 2009 - Elsevier
… Statistical parametric maps of t-values were generated. One-sample t-tests across all
participants in each group were performed to determine whether activation within a group was …

“Silent” MRI with soft gradient pulses

F Hennel, F Girard, T Loenneker - Magnetic Resonance in …, 1999 - Wiley Online Library
A method to reduce the acoustic noise generated by gradient systems in magnetic resonance
imaging (MRI) is proposed based on the linear response theory. Since the acoustic …

Development of neural networks for exact and approximate calculation: A FMRI study

…, M von Aster, T Loenneker, T Dietrich… - Developmental …, 2008 - Taylor & Francis
Neuroimaging findings in adults suggest exact and approximate number processing relying
on distinct neural circuits. In the present study we are investigating whether this cortical …

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

MS Oechslin, A Imfeld, T Loenneker… - Frontiers in Human …, 2010 - frontiersin.org
Previous neuroimaging studies have demonstrated that musical expertise leads to functional
alterations in language processing. We utilized diffusion tensor imaging (DTI) to investigate …

Quantitative diffusion tensor MR imaging of the brain: field strength related variance of apparent diffusion coefficient (ADC) and fractional anisotropy (FA) scalars

TAGM Huisman, T Loenneker, G Barta… - European …, 2006 - Springer
The objectives were to study the “impact” of the magnetic field strength on diffusion tensor
imaging (DTI) metrics and also to determine whether magnetic-field-related differences in T2-…

Diffusion tensor imaging in Joubert syndrome

A Poretti, E Boltshauser, T Loenneker… - American journal …, 2007 - Am Soc Neuroradiology
BACKGROUND AND PURPOSE: Neuropathologic findings and preliminary imaging
studies demonstrated the absence of pyramidal tract and superior cerebellar peduncular …