Document Detail

Displacement of primary sensorimotor cortex activation after subcortical stroke: a longitudinal PET study with clinical correlation.
MedLine Citation:
PMID:  12948719     Owner:  NLM     Status:  MEDLINE    
Five patients with left striatocapsular infarction were studied twice with PET during auditory-cued right thumb-index tapping, around 2 months after stroke and again around 8 months after stroke. At PET1 and PET2, the ipsilesional primary sensorimotor (SM1) activation peak Talairach coordinates were compared to those from seven aged-matched healthy controls. At PET1, there was a significant posterior displacement of SM1 activation peak, which confirms a previous report and may represent unmasking/disinhibition of motor representations. Over time, there was no significant change in the coordinates, and no significant correlation between coordinate changes from PET1 to PET2 and concomitant motor recovery. The implications of posterior displacement of SM1 activation peak for recovery therefore remain elusive.
Cinzia Calautti; Francois Leroy; Jean-Yves Guincestre; Jean-Claude Baron
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  NeuroImage     Volume:  19     ISSN:  1053-8119     ISO Abbreviation:  Neuroimage     Publication Date:  2003 Aug 
Date Detail:
Created Date:  2003-09-01     Completed Date:  2003-10-23     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9215515     Medline TA:  Neuroimage     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1650-4     Citation Subset:  IM    
Department of Neurology, University of Cambridge, Addenbrooke's Hospital, Hills Road, Cambridge CB2 2QQ, UK.
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MeSH Terms
Acoustic Stimulation
Brain Mapping
Corpus Striatum / physiopathology,  radionuclide imaging*
Dominance, Cerebral / physiology
Follow-Up Studies
Hemiplegia / physiopathology,  radionuclide imaging
Image Processing, Computer-Assisted / methods*
Internal Capsule / physiopathology,  radionuclide imaging*
Middle Aged
Motor Cortex / physiopathology,  radionuclide imaging*
Psychomotor Performance / physiology*
Somatosensory Cortex / physiopathology,  radionuclide imaging*
Tomography, Emission-Computed / methods*

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