Table 1.

Figures of merit of major electroanalytical techniques for neurotransmitter detection

Techniques	Sensitivity	Selectivity	Temporal resolution
Amperometry	low (25–100 nM LOD dopamine but sufficient to count number of molecules)20	low (All compounds that can be oxidized or reduced at the applied potential will give the signal.)	highest (electronic sampling rate, < 1 ms) 2
Pulse Voltammetry	high (10 nM LOD dopamine)20	high (Molecules with oxidation potential differs more than 100 mV is resolved.)2	low (up to 1 min)
Fast-Scan Cyclic Voltammetry	high (10 nM LOD dopamine)20	highest (CV shape identifies molecule, but similar species may have similar CV.)	high (triangular waveform frequency, 100 ms)