Figure 5. WM-induced changes in extrastriate visual responses improve two-point discrimination.

For each neuron and pair of probe positions (n=65 MT single neurons and 125 MT MUA), a d′ value was computed from the responses to two probes to measure two-point discriminability during the fixation and memory conditions. Colour indicates the % enhancement during the memory condition, compared to the fixation condition ((d′_memory−d′_fixation)/d′_fixation × 100), averaged over all neurons at each location. Axes indicate the distance between the centre of the probe pair and the neuronal RF centre measured during fixation (y axis) and the remembered location (x axis).