Elevated extracellular potassium concentration in unstimulated spinal dorsal horns of frogs.

@article{Sykov1983ElevatedEP,
  title={Elevated extracellular potassium concentration in unstimulated spinal dorsal horns of frogs.},
  author={Eva Sykov{\'a} and Nikolaus Kriz and Peter Preis},
  journal={Neuroscience letters},
  year={1983},
  volume={43 2-3},
  pages={293-8}
}
The extracellular K+ concentration, [K+]e, was studied in unstimulated spinal cords in situ or in isolated spinal cords of frogs. The [K+]e in the dorsal horn at a depth of 150-500 microM exceeded the [K+]e found in the submeningeal fluid, in most of the upper dorsal horn and in the ventral horn by as much as 2.0 mmol . 1(-1). A substantially higher [K+]e, by 0.5-1.0 mmol . 1(-1) was also found in the intermediate region. The blockade of synaptic activity and of spontaneous activity in isolated… CONTINUE READING