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. Author manuscript; available in PMC: 2010 Oct 1.
Published in final edited form as: IEEE Trans Biomed Circuits Syst. 2010 Apr 1;4(2):86–92. doi: 10.1109/TBCAS.2009.2033706

Fig. 5.

Fig. 5

Amperometric recording of catecholamine release from a chromaffin celll using a CFE connected to the CMOS potentiostat. (a) Microscopic image of the CFE touching the cell and stimulation pipette containing 20 μM ionomycin positioned close to the cell. (b) Amperometric current after ionomycin stimulation. (c, d). Two events (smoothed) of varying amplitudes and half-widths on expanded scales with fit lines from the spike parameter analysis.