Figure 3.

Correlation map across spiking activity & LFP time bins. (A–D) The top panels (A,B) represent the correlation maps for the two monkeys. X and Y-axes represent the center of the 10 ms time bins (aligned to stimulus onset) for spiking activity and LFP averaging, respectively. For each pair of time bins, colors show the average Pearson correlation of spiking activity and LFP calculated per site across trials with the preferred stimulus. Black borders indicate regions that have statistically significant correlations across recording sites (thicker borders correspond to p < 0.01 (t-test, corrected for multiple comparisons)). White lines connect pairs of time bins with the same X and Y indices and are drawn for illustration. Panels (C,D) present the histogram of “LFP time index – Spikes time index” for the time pairs with significant correlations for each monkey. The dashed vertical lines correspond to the median of each histogram (+40 ms for both monkeys, p ≪ 0.001, sign test). (E–H) Correlation maps for different cueing conditions. (E,G) Similar to maps in panels (A,B) but for trials in which the RF location was cued and therefore the stimulus inside the RF (moving in the preferred direction) was the target. (F,H) Correlation maps for trials where the cue was contralateral to the RF, i.e. the stimulus inside the RF was the distractor. Top and bottom panels correspond to monkeys H and T, respectively. The maps follow the same convention of coding as in panels A & B. Note that correlation values here and in the following figures are computed from the inversed LFP values (see Materials & Methods for details).