Figure 1.

Choice task with variable reward size. Animals first fixated and put their hand on a central target. Following a short delay, 2 targets appeared in the periphery. One target was placed in the RF of the recorded neuron, the other target outside of the RF. The animals acquired one of the targets with either an eye or hand movement, depending on whether the central cue was red or blue, respectively. Each choice was followed by th delivery of a liquid reward of a particular size (see text).