Activity patterns of human somatosensory cortex adapt dynamically to stimulus properties

Christoph Braun, Anne Wilms, Renate Schweizer, Ben Godde, Hubert Preissl, Niels Birbaumer

Research output: Contribution to journalArticle

Abstract

Long-term synchronous tactile stimulation of two sites of the body results in integrated, overlapping cortical representations whereas asynchronous stimulation leads to segregated representations. To investigate the cortical capacity to adapt dynamically to stimulation properties 22 subjects were stimulated at digits 1, 3 and 5 of both hands in either random or fixed order. Changes in the functional organization of the somatosensory cortex were inferred by neuromagnetic source analysis based on somatosensory evoked magnetic fields. Compared to the stimulation in random sequence, the stimulation in fixed order revealed a reduction in distance between the cortical representation of D1 and D3. We conclude that the pattern of activation in the somatosensory cortex adapts dynamically to the spatio-temporal characteristics of the stimuli. (C) 2000 Lippincott Williams and Wilkins.

Original languageEnglish
Pages (from-to)2977-2980
Number of pages4
JournalNeuroReport
Volume11
Issue number13
Publication statusPublished - Sep 11 2000

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Keywords

  • Cortex organization
  • Dipole source localization
  • MEG
  • Plasticity
  • SEF
  • Somatosensory cortex

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Braun, C., Wilms, A., Schweizer, R., Godde, B., Preissl, H., & Birbaumer, N. (2000). Activity patterns of human somatosensory cortex adapt dynamically to stimulus properties. NeuroReport, 11(13), 2977-2980.