Different relationships between central dopamine system and sub-processes of inhibition: Spontaneous eye blink rate relates with N2 but not P3 in a Go/Nogo task.

•The relationship between dopamine (DA) and neural process of inhibition was explored.•Central DA system function was measured by the spontaneous eye blink rates (EBR).•Results showed that higher EBR was related with larger Go- and Nogo-N2 peaks.•EBR was not related with N2 latency and P3 amplitude in Go- and Nogo-conditions.•Central DA system differently related with sub-processes of inhibition in Go/Nogo task.