Direct current stimulation over MT+/V5 modulates motion aftereffect in humans

Andrea Antal, Edina T. Varga, Michael A. Nitsche, Zoltan Chadaide, Walter Paulus, Gyula Kovács, Zoltán Vidnyánszky

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

While there is strong evidence for the central role of the human MT + /V5 in motion processing, its involvement in motion adaptation is still the subject of debate. We used transcranial direct current stimulation (tDCS) to test whether MT + /V5 is part of the neural network involved in the long-term adaptation-induced motion after-effect in humans. It was found that both cathodal and anodal stimulation over MT + /V5 resulted in a significant reduction of the perceived motion after-effect duration, but had no effect on performance in a luminance-change-detection task used to determine attentional load during adaptation. Our control experiment excluded the possibility that the observed MT + /V5 stimulation effects were due to a diffused modulation of the early cortical areas, i.e. by the stimulation applied over MT + /V5. These results provide evidence that external modulation of neural excitability in human MT + /V5 affects the strength of perceived motion after-effect and support the involvement of MT + /V5 in motion adaptation processes.

Original languageEnglish
Pages (from-to)2491-2494
Number of pages4
JournalNeuroreport
Volume15
Issue number16
DOIs
Publication statusPublished - Dec 15 2004

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Keywords

  • Direct current stimulation
  • Motion after-effect
  • Visual cortex

ASJC Scopus subject areas

  • Neuroscience(all)

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