Experientia

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

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

  • H. Korytová
Article

Summary

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.

Keywords

Potassium Cerebral Cortex Extracellular Concentration Nociceptive Stimulus 

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Copyright information

© Birkhäuser Verlag 1977

Authors and Affiliations

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

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