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Isolated paravermal T2 high-intensity lesions in dentatorubral-pallidoluysian atrophy.
J Neurol Sci
August 2023
Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan.
Isolated Paravermal Hyperintensities in Neuronal Intranuclear Inclusion Disease.
Neurology
May 2022
From the Departments of Neurology (R.T., M.H.M., A.M., S.S., H.I., T.T.), Radiology (F.S.), and Otolaryngology and Head and Neck Surgery (K.S., C.F.), Graduate School of Medicine, The University of Tokyo, Japan.
A neuroimaging study of premotor lateralization and cerebellar involvement in the production of phonemes and syllables.
J Speech Lang Hear Res
October 2008
Speech Communication Group, Research Laboratory of Electronics, Room 36-547, Massachusetts Institute of Technology, 50 Vassar Street, Cambridge, MA 02139, USA.
Purpose: This study investigated the network of brain regions involved in overt production of vowels, monosyllables, and bisyllables to test hypotheses derived from the Directions Into Velocities of Articulators (DIVA) model of speech production (Guenther, Ghosh, & Tourville, 2006). The DIVA model predicts left lateralized activity in inferior frontal cortex when producing a single syllable or phoneme and increased cerebellar activity for consonant-vowel syllables compared with steady-state vowels.
Method: Sparse sampling functional magnetic resonance imaging (fMRI) was used to collect data from 10 right-handed speakers of American English while producing isolated monosyllables (e.
Cerebellar speech representation: lesion topography in dysarthria as derived from cerebellar ischemia and functional magnetic resonance imaging.
Arch Neurol
July 2003
Department of Neurology, Institute of Neuroradiology, University of Mainz, Mainz, Germany.
Background: Lesion topography and the pathophysiological background of dysarthria due to focal cerebellar lesions have not yet been fully clarified.
Objectives: To investigate the lesion topography of dysarthria due to cerebellar ischemia and evaluate brainstem functions.
Design: Case studies.
Dysarthria in acute ischemic stroke: lesion topography, clinicoradiologic correlation, and etiology.
Neurology
April 2001
Department of Neurology, Institute of Neuroradiology, University of Mainz, Germany.
Background And Purpose: Although dysarthria is a frequent symptom in cerebral ischemia, there is little information on its anatomic specificity, spectrum of associated clinical characteristics, and etiologic mechanisms.
Methods: An investigation of 68 consecutive patients with sudden onset of dysarthria due to a single infarction confirmed by MRI or CT was conducted.
Results: Dysarthria was associated with a classic lacunar stroke syndrome in 52.
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