Cerebellar vermis plays a causal role in visual motion discrimination

Zaira Cattaneo, Chiara Renzi, Stefano Casali, Juha Silvanto, Tomaso Vecchi, Costanza Papagno, Egidio D'Angelo

Research output: Contribution to journalArticle

Abstract

Cerebellar patients have been found to show deficits in visual motion discrimination, suggesting that the cerebellum may play a role in visual sensory processing beyond mediating motor control. Here we show that triple-pulse online transcranial magnetic stimulation (TMS) over cerebellar vermis but not over the cerebellar hemispheres significantly impaired motion discrimination. Critically, the interference caused by vermis TMS on motion discrimination did not depend on an indirect effect of TMS over nearby visual areas, as demonstrated by a control experiment in which TMS over V1 but not over cerebellar vermis significantly impaired orientation discrimination. These findings demonstrate the causal role of the cerebellar vermis in visual motion processing in neurologically normal participants.

Original languageEnglish
Pages (from-to)272-280
Number of pages9
JournalCortex
Volume58
DOIs
Publication statusPublished - Sep 1 2014

Keywords

  • Cerebellum
  • Motion detection
  • Orientation discrimination
  • TMS
  • Visual

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Cognitive Neuroscience
  • Medicine(all)

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