Figure 3.

(A) Examples of STRF contour plots (as in Figure 2C) for a range of single CX units that responded after the appearance of the target. Note the various different field patterns of positive (brown) and negative (blue) responses to the target. The mantis's head orientation is depicted in contour viii. (B) Bars indicate the time period for each neuron where the correlation seen in the STRF curve was above the 2-SD range. The triangle indicates the peak of this curve. All cells that had bars to the left of 0 (point where spike activity changes) responded to target presentation but did not evoke movement of the mantis. These bars represent all cells that showed these response patterns. (C) All of the contours we recorded were superimposed on two contour fields: one brown (positive) and one blue (negative). This indicates that the entire area around the head of the mantis is covered by both positive and negative response regions.