title: Cortical potentials preceding voluntary finger movement in patients with focal cerebellar lesion.
abstract: OBJECTIVE
  To elucidate influences of the dentate nucleus on the generation of the related cortical potentials (MRCPs) preceding voluntary movement, Bereitschaftspotential (BP) and negative slope (NS).
  
  
  METHODS
  MRCPs preceding self-paced voluntary finger movement were recorded in 5 cases with localized cerebellar lesions due to stroke or tumor. Comparing 3 of them involving the dentate nucleus and 2 others sparing it, as judged from CT or MRI findings.
  
  
  RESULTS
  BP and NS preceding voluntary finger movement ipsilateral to the lesion were absent or markedly reduced in amplitude in those 3 cases with the dentate nucleus lesion, whereas those negative components were present in the 2 cases with no evidence of dentate lesion.
  
  
  CONCLUSIONS
  The dentate nucleus has a facilitatory effect on the generation of BP and NS.
authors.affiliation: Rehabilitation Center, Chiba-Hokusoh Hospital of Nippon Medical School, Inba, Chiba, Japan.
authors.forename: J
authors.initials: J
authors.lastname: Kitamura
authors.forename: H
authors.initials: H
authors.lastname: Shabasaki
authors.forename: A
authors.initials: A
authors.lastname: Terashi
authors.forename: K
authors.initials: K
authors.lastname: Tashima
mesh_terms: D000328:Adult; D000368:Aged; D001921:Brain / Q000503:physiopathology*; D001931:Brain Mapping; D002526:Cerebellar Diseases / Q000503:physiopathology*; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D005385:Fingers / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009068:Movement / Q000502:physiology*