Visuomotor adaptive improvement and aftereffects are impaired differentially following cerebellar lesions in SCA and PICA territory

Susen Werner, Otmar Leo Bock, Elke R Gizewski, Beate Schoch, Dagmar Timmann

Publication: Contribution to journalJournal articlesResearchpeer-review

Abstract

The aim of the present study was to elucidate the contribution of the superior and posterior inferior cerebellum to adaptive improvement and aftereffects in a visuomotor adaptation task. Nine patients with ischemic lesions within the territory of the posterior inferior cerebellar artery (PICA), six patients with ischemic lesions within the territory of the superior cerebellar artery (SCA) and 17 age-matched controls participated. All subjects performed center-out reaching movements under 60 degrees rotation of visual feedback. For the assessment of aftereffects, we tested retention of adaptation and de-adaptation under 0 degrees visual rotation. From this data we also quantified five measures of motor performance. Cerebellar lesion-symptom mapping was performed using magnetic resonance imaging subtraction analysis. Adaptive improvement during 60 degrees rotation was significantly degraded in PICA patients and even more in SCA patients. Subtraction analysis revealed that posterior (Crus I) as well as anterior cerebellar regions (lobule V) showed a common overlap related to deficits in adaptive improvement. However, for aftereffect measures as well as for motor performance variables only SCA patients, but not PICA patients showed significant differences to control subjects. Subtraction analysis showed that affection of lobules V and VI were more common in patients with impaired retention and de-adaptation, respectively. Data shows that areas both within the superior and posterior inferior cerebellum are involved in adaptive improvement. However, only the superior cerebellum including lobules V and VI appears to be important for aftereffects and therefore true adaptive ability.

Original languageEnglish
JournalExperimental brain research
Volume201
Issue number3
Pages (from-to)429-439
Number of pages11
ISSN0014-4819
DOIs
Publication statusPublished - 01.03.2010

Research areas and keywords

  • Adaptation, Physiological
  • Adolescent
  • Adult
  • Aged
  • Basilar Artery
  • Brain Infarction
  • Cerebellar Diseases
  • Cerebellum
  • Disability Evaluation
  • Female
  • Humans
  • Learning
  • Male
  • Middle Aged
  • Movement Disorders
  • Neuronal Plasticity
  • Neuropsychological Tests
  • Photic Stimulation
  • Psychomotor Performance
  • Vertebrobasilar Insufficiency

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