| Persistent mirror movements: functional MR imaging of the hand motor cortex. | |
| | |
MedLine Citation:
|
PMID: 9114119 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
PURPOSE: To compare cortical areas involved in hand motor function in patients with persistent motor movements with those in healthy control subjects by using functional magnetic resonance (MR) imaging. MATERIALS AND METHODS: Nine patients (five patients with autosomal-dominant mirror movements, three with Kallmann syndrome, one with Wildervanck syndrome) and 10 healthy control subjects participated in the study. Functional MR imaging was performed at 1.5 T with a two-dimensional fast low-angle shot sequence. Participants were imaged while performing sequential finger-thumb opposition and during a rest period. RESULTS: During unimanual intentional movements, MR imaging in all control subjects showed increased signal intensity along the superior bend of the central sulcus contralateral to the moved hand. This increase was predominantly located in a region that included the medial part of the precentral gyrus. In contrast, MR imaging in patients with mirror movements showed bilateral activity in the medial region of the precentral gyrus. CONCLUSION: Bifurcations of the corticospinal tract may not be solely responsible for mirror movements. Bilateral activity of the primary motor cortex seems to play an additional role. |
| | |
Authors:
|
G L Leinsinger; D T Heiss; A G Jassoy; T Pfluger; K Hahn; A Danek |
Related Documents
:
|
17276699 - Metabolic mapping using 2d 31p-mr spectroscopy reveals frontal and thalamic metabolic a... 2378929 - Cerebral white matter disease in late-onset paranoid psychosis. 12499409 - Functional imaging studies of neuropsychological patients: applications and limitations. 19942229 - Gray matter density in limbic and paralimbic cortices is associated with trauma load an... 14630229 - Mr imaging in the non-human primate: studies of function and of dynamic connectivity. 20129169 - Transient global amnesia: functional anatomy and clinical implications. 21465109 - Mdct artifact related to the intra-scan gravitational flow of opacified luminal fluid (... 22474639 - Imaging of the anterior cruciate ligament. 16632709 - Mri features after radiofrequency ablation of osteoid osteoma with cooled probes and im... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Radiology Volume: 203 ISSN: 0033-8419 ISO Abbreviation: Radiology Publication Date: 1997 May |
Date Detail:
|
Created Date: 1997-05-13 Completed Date: 1997-05-13 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 0401260 Medline TA: Radiology Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 545-52 Citation Subset: AIM; IM |
Affiliation:
|
Institute for Diagnostic Radiology, Klinikum Innenstadt, Ludwig-Maximilians-Universität Munich, Germany. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adolescent Adult Female Hand / physiology* Humans Kallmann Syndrome / physiopathology Klippel-Feil Syndrome / physiopathology Magnetic Resonance Imaging* Male Middle Aged Motor Cortex / physiology* Movement Disorders / physiopathology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Differentiation between portal-systemic encephalopathy and neurodegenerative disorders in patients w...
Next Document: Focal cortical dysplasia: appearance on MR images.