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. 2007 Feb 16;92(9):3122–3129. doi: 10.1529/biophysj.106.103754

FIGURE 3.

FIGURE 3

The effect of replacing sodium with choline in the Ringer's solution bathing the neurohypophysis. (A) Optical recordings (−ΔF) of a single action potential in normal mouse Ringer's solution (Control, top trace), in Ringer's solution in which 70% of the Na+ was replaced by choline (middle trace), and the recovery in Control (bottom trace). (B) HBAFM measurements of the mechanical spike and dip recorded simultaneously with the corresponding action potentials in panel (A). All traces were sampled at 20 kHz and low-pass filtered at 7 kHz.