Fig. 4
From: The onset of motor learning impairments in Parkinson’s disease: a computational investigation
Simulated motor task. Given an input signal, the network has to learn the most appropriate motor command in response to each stimulus. The task can be schematized either as (a) or (b), and it is correctly performed when the network selects the appropriate sequence of motor commands for the whole sequence of stimuli. The sequence of stimulus–response presented to the network is that reported in the figure, from stimulus 1 to stimulus 4