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Effects of Increased Extracellular Potassium Activity in the Frog Spinal Cord on the Flexor Reflex

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Ion-Selective Microelectrodes and Their Use in Excitable Tissues

Abstract

Neuronal activity causes potassium ions to accumulate in the extracellular space of the spinal cord. Their concentration may increase from the resting level of 2 or 3 mmo1/1 to as high as 9–10 mmo1/l following tetanic stimulation of the dorsal roots or peripheral nerves (Vyklický et al., 1972; Krnjević and Morris, 1972; Kříž et al., 1974; Bruggencate et al., 1974; Somjen and Lothman, 1974; Kříž et al., 1975; Krnjević and Morris, 1975; Syková et al., 1976). Smaller increases, not exceeding 1 mmo1/1 are produced by adequate stimulation of the skin (Syková et al., 1980).

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© 1981 Plenum Press, New York

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Vyklický, L., Syková, E. (1981). Effects of Increased Extracellular Potassium Activity in the Frog Spinal Cord on the Flexor Reflex. In: Syková, E., Hník, P., Vyklický, L. (eds) Ion-Selective Microelectrodes and Their Use in Excitable Tissues. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-9224-2_19

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  • DOI: https://doi.org/10.1007/978-1-4615-9224-2_19

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4615-9226-6

  • Online ISBN: 978-1-4615-9224-2

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