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Pflügers Archiv

, Volume 407, Issue 2, pp 129–133 | Cite as

Magnetic cortical responses evoked by tactile stimulation of the middle finger in man

  • J. Huttunen
Excitable Tissues and Central Nervous Physiology

Abstract

Topographic distribution of cerebral magnetic responses to air-puff stimulation of the hairy skin of the middle finger was studied in healthy humans. The magnetic response was biphasic, with peak amplitudes at 57±16 ms and 108±34 ms. The field distributions for both deflections were interpreted in terms of equivalent current dipole sources at SI; the sources were different for the two deflections, although spatially close to each other. The electric evoked response was more complex in waveform, possibly reflecting activation of additional radial or deep current sources.

Key words

Evoked responses Tactile stimulation Somatosensory cortex Magnetic fields Man 

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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • J. Huttunen
    • 1
  1. 1.Low Temperature LaboratoryHelsinki University of TechnologyEspooFinland

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