Figure 4.

Effect of distance on the time scale of correlation. A, Surface plot showing the value of r_ccg for different integration windows and distances between electrodes. The color scale is shown to the left of panel E. B, r_ccg as a function of integration window for different distance groups (thinner and darker lines for more distant pairs). C, Surface plot showing the value of r_ccg for different integration windows and tuning similarity. The color scale is shown on the right. D, r_ccg as a function of integration window for different r_signal groups (thinner and darker lines indicate pairs with less similar tuning preferences). E, For neurons in three distance groups (thinner and darker lines are more distance), the value of r_ccg is shown as a ratio to its value at the longest distance (3–4 mm). F, Average shuffle-corrected CCGs for pairs of neurons grouped by distance. The tick marks to the left of the CCGs indicate a value of 0 coinc./sp.