However, recent findings argue for additional mechanisms and suggest the decisions between actions often emerge through a continuous competition within the same brain regions that plan and guide action execution.

This view has received apparent support from series of neurophysiological studies, which found neural correlates of decision variables within sensorimotor brain regions (for review, see [7, 13, 15] ).

Instead, they generate discrete choices and not population codes that can be used to guide action in continuous parameter spaces, and they do not capture the interactions between networks of brain regions in any realistic way (see below).

It provides insights to a variety of findings in neurophysiological and behavioral studies, such as the competitive interactions between populations of neurons within [27, 28] and between [29] brain regions that result frequently in spatial averaging movements [10, 18, 30] and the effects of decisions variables on neuronal activity [31, 32].