Fig. 6.

Correct rates over normalized movement time, averaged across the four subjects (grand mean ± SE). These values were obtained from the discriminant analysis for the same initial letter categories (Fig. 5A). Chance level correct rates (1 of 5 or 20%) are plotted along with 95% confidence intervals determined by bootstrapping. Each category showed a trend of increasing correct rate with movement time, which began before the penultimate letter (C or R). In the best case (ISC_ words,top left), the correct rate reached statistical significance well before hold time for the C (arrow), indicating a strong reverse influence on the penultimate hand shape by the final vowel.