FIGURE 3.

Effects of training with SA- and Neutral pre-cues. (A) Plot of mean (± SEM) direction difference (DD) threshold, with individual data superimposed (white circles). Intact field performance was largely normal across both cohorts (white bars), while baseline (pre-training) performance in the blind field was similarly impaired for both cohorts (light gray bars). After training (dark gray bars), the majority of SA-trained participants, and the group as a whole improved over baseline. However, the group average remained impaired relative to the intact field. In contrast, the majority of Neutral-trained participants did not attain lower thresholds after training. As a group, they did not improve from baseline and remained impaired relative to their intact field. (B) Plot of mean (± SEM) percent correct performance at the minimum difficulty (MDP), in this case a 90° DD from horizontal. Intact field performance for both cohorts was similarly good (white bars), and baseline performance in the blind field was impaired (light gray bars) relative to their intact visual fields. All participants in the SA training cohort improved relative to their own pre-training levels, attaining post-training MDP % correct performance that was not significantly different from their intact field. In comparison, the Neutral-trained cohort did not improve significantly from baseline overall, and remained impaired relative to their own intact fields. Gray error bars on comparisons lines indicate ±1 standard error of the difference between the compared means; see text for descriptive statistics.