, Volume 33, Issue 2, pp 242–244 | Cite as

Arousal-induced increase of cortical [K+] in unrestrained rats

  • H. Korytová


Changes of extracellular concentration of brain potassium [K+]e were studied in lightly anesthetized unrestrained rats with ion-selective K+-microelectrodes introduced into the cerebral cortex with a head-mounted microdrive system. Nociceptive stimuli elicited EEG arousal lasting for 47 sec on the average which was accompanied by an increase of [K+]e from 3.0 mM to 3.31 ± 0.04 mM.


Potassium Cerebral Cortex Extracellular Concentration Nociceptive Stimulus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    J. L. Walker, Analyt. Chem.43, 89 A (1971).Google Scholar
  2. 2.
    A. Van Harreveld, Butterworths, Washington, D. C. (1966).Google Scholar
  3. 3.
    F. Vyskočil, N. Křiž and J. Bureš, Brain Res.39, 255 (1972).PubMedGoogle Scholar
  4. 4.
    D. A. Prince, H. D. Lux and E. Neher, Brain Res.50, 489 (1973).PubMedGoogle Scholar
  5. 5.
    K. J. Futamachi, R. Mutani and D. A. Prince, Brain Res.75, 5 (1974).PubMedGoogle Scholar
  6. 6.
    H. G. Lux, E. Neher and D. A. Prince, Pflügers Arch., suppl. 332, R 89 (1972).Google Scholar
  7. 7.
    J. Bureš, I. von Schwarzenfeld and G. Brožek, Epilepsia16, 111 (1975).PubMedGoogle Scholar
  8. 8.
    J. Machek, E. Ujec and V. Pavlík, Physiol. Bohemoslov.24, 41 (1975).PubMedGoogle Scholar
  9. 9.
    L. Vyklický, E. Syková, N. Kříž and E. Ujec, Brain Res.45, 608 (1975).Google Scholar
  10. 10.
    N. Kříž, E. Syková, E. Ujec and L. Vyklický, J. Physiol.238, 1 (1974).PubMedGoogle Scholar
  11. 11.
    K. Krnjević and M. E. Morris, Can. J. Physiol.53, 912 (1975).Google Scholar
  12. 12.
    F. Vyskočil and N. Kříž, Pflügers Arch.337, 265 (1972).Google Scholar
  13. 13.
    H. Caspers, Proc. int. Union Physiol. Sci, XXII Int. Congress, Leiden, vol. I, part I, p. 442 (1962).Google Scholar

Copyright information

© Birkhäuser Verlag 1977

Authors and Affiliations

  • H. Korytová
    • 1
  1. 1.Institute of PhysiologyCzechoslovak Academy of SciencesPraha 4-Krč(Czechoslovakia)

Personalised recommendations