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Related Experiment Video

Updated: Mar 22, 2026

MRI-guided Focused Ultrasound Thalamotomy for Patients with Medically-refractory Essential Tremor
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Cerebellar dysfunction in essential tremor.

Ritsuko Hanajima1,2, Ryosuke Tsutsumi2, Yuichiro Shirota1

  • 1Department of Neurology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan.

Movement Disorders : Official Journal of the Movement Disorder Society
|April 11, 2016
PubMed
Summary

Essential tremor impacts cerebellar function, affecting motor cortical inhibition and prism adaptation. Cerebellar involvement, potentially via Purkinje cells, is implicated in essential tremor pathogenesis.

Keywords:
prism adaptationsensory-motor adaptationtranscranial magnetic stimulationtremor

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Area of Science:

  • Neuroscience
  • Neurology
  • Physiology

Background:

  • Essential tremor is a common movement disorder.
  • The cerebellum's role in essential tremor pathophysiology remains under-investigated.
  • Neurophysiological evidence is needed to elucidate cerebellar contributions.

Purpose of the Study:

  • To investigate cerebellar function in patients with essential tremor.
  • To assess motor cortical inhibition and prism adaptation in essential tremor.
  • To explore the relationship between tremor severity and cerebellar abnormalities.

Main Methods:

  • Studied 20 patients with essential tremor and 30 healthy controls.
  • Utilized cerebellar magnetic stimulation to assess motor cortical inhibition.
  • Employed prism adaptation tasks to evaluate cerebellar function.

Main Results:

  • Patients with essential tremor showed significant alterations in cerebellar inhibition.
  • Prism adaptation was also impaired in individuals with essential tremor.
  • No correlation was found between tremor severity and the degree of observed abnormalities.

Conclusions:

  • The cerebellum, including Purkinje cells, appears to be involved in essential tremor.
  • This cerebellar involvement may represent a primary lesion or a secondary compensatory mechanism.
  • Findings suggest a direct role for the cerebellum in the generation or modulation of essential tremor.