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Reaching neuron spatially tuned in dark. A, Neuron spatially tuned in MOV, HOLD and RET, preferring leftward and rightward arm movements in dark (upper part of the figure). All details are as in Figures 3A and 2. Scale: Vertical bar on histograms, 90 spikes/s. B, Mean activity, for the same action epochs, of the same unit shown in A. Details are as in Figure 3B.
