Correlation coefficient versus difference score scatter plot for cells with activity of more than 2 s.d. above the mean in the expert session. The x axis indicates the near–far correlation coefficient, and the y axis denotes the difference score D = | A _near − A _far|/max( A _near, A _far), in which A _near and A _far are peak neural activities in near and far trials. Example cells were manually selected and colour-coded based on their relative location within the plot.
