Used as a selective potassium channel blocker in neuroscience research to study synaptic transmission and neuronal excitability. Helps in investigating the role of potassium currents in action potential repolarization and afterhyperpolarization phases. Commonly applied in electrophysiological experiments on brain slices and cultured neurons to modulate neuronal firing patterns and enhance synaptic responses. Also utilized to probe the function of specific Kv channels in cellular models.