Figure 2. Preoperative and postoperative loop gain.

The distribution of group loop gain values are shown in the box-and-whiskers plots (group median, upper and lower quartile, upper and lower extreme, and outliers). (A) Individual preoperative and postoperative loop gain. (B) Individual preoperative and postoperative loop gain in responders (n = 15). (C) Preoperative and postoperative loop gain in nonresponders (n = 15).