Abstract:Amperometry recording reveals the exocytosis of catecholamine from individual vesicles as a sequential process, typically beginning slowly with a pre-spike foot, accelerating sharply to initiate a spike, reaching a peak, and then decaying. This complex sequence reflects the interplay between diffusion, flux through a fusion pore, and possibly dissociation from a vesicle's densecore. In an effort to evaluate the impacts of these factors, a model was developed that combines diffusion with flux through a static p… Show more
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