Pflügers Archiv

, Volume 399, Issue 2, pp 155–156 | Cite as

CO2 laser radiant heat pulses activate C nociceptors in man

  • Burkhart Bromm
  • Rolf-Detlef Treede
Letters and Notes


Cerebral potentials evoked by noxious CO2 laser stimuli in man have been referred to nociceptive Aδ units. This paper shows 1) that ultra short (5–50 ms) high power (≤ 50 W) CO2 laser skin stimuli are able to activate nociceptive C units in man, and 2) that these C nociceptors have to be assumed to terminate in the very superficial skin layer (≤300 μm depth).

Key words

CO2 laser thermal stimuli C fibre activity pain man 


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Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • Burkhart Bromm
    • 1
  • Rolf-Detlef Treede
    • 1
  1. 1.Institute of PhysiologyUniversitäts-Krankenhaus EppendorfHamburg 20Federal Republic of Germany

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