Reaching neuron spatially tuned both in the dark and in the light. A, Neuron showing reach-related activity modulated by outward arm movement (MOV) in the light and in the dark. The neuron preferred rightward movements and was weakly modulated, if at all, by task conditions. All details are as in Figures 2 and 3A. Scale: Vertical bar on histograms, 110 spikes/s. B, Mean activity, for the same action epochs, of the same unit shown in A. All details are as in Figure 3B.