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Arousal-induced increase of cortical [K+] in unrestrained rats
Authors:H Korytová
Institution:(1) Institute of Physiology, Czechoslovak Academy of Sciences, Budecaronjovická 1083, 142 20 Praha 4-Krccaron, (Czechoslovakia)
Abstract: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.Acknowledgment. I wish to express my sincere gratitude to Dr. Burescaron from the Institute of Physiology, Czechoslovak Academy of Sciences, for his kind help in the preparation of this article.
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