American Society of Anesthesiologists

Figure 1. Whole-cell outward Potassium sup + current in a single canine cerebral arterial muscle cell dialized with 1.8 mM CaCl2and 2.5 mM EGTA before (A) and after (B) addition of 3 mM tetraethylammonium (TEA). Cells were progressively depolarized from a holding potential of 60 mV to the corresponding potentials indicated on the pulse protocol. An outward current was elicited whose amplitude was markedly depressed by TEA. (C) Peak current-voltage relations obtained before and after exposure to 3 mM TEA in two canine cerebral arterial muscle cells.

Figure 1. Whole-cell outward Potassium sup + current in a single canine cerebral arterial muscle cell dialized with 1.8 mM CaCl²and 2.5 mM EGTA before (A) and after (B) addition of 3 mM tetraethylammonium (TEA). Cells were progressively depolarized from a holding potential of 60 mV to the corresponding potentials indicated on the pulse protocol. An outward current was elicited whose amplitude was markedly depressed by TEA. (C) Peak current-voltage relations obtained before and after exposure to 3 mM TEA in two canine cerebral arterial muscle cells.

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