Fig. 2.

Model predictions of the localization errors for 2 different velocity profiles. Left: gray distribution represents temporal uncertainty (σ = 200 ms) about the tactile stimulus presented at 0.2 s (vertical dashed line) relative to movement onset; note that here we use a delay parameter of 0 ms. Combining this distribution with 2 different arm movement profiles (purple and green lines) results in 2 different likelihoods. The mean of the likelihood (indicated by both the purple and green arrows) represents the predicted perceived error for that time sample. Each time sample provides different likelihoods with corresponding means and results in a predicted localization error pattern for both conditions (as shown at right). Right: 2 predicted localization curves for the fast- and slow-starting movements, using the same parameters as those at left. Note the differences between the 2 localization curves.