Fig 1.
A. Schematic drawing of experimental setup. B. From upper left to lower right corner: wooden rod, blindfold, reflective markers, elastic band with motors, and backpack with microcontrollers and battery.
Fig 2.
Variables used to compute exploratory movement variables.
x = horizontal position; y = depth position; and h = heading direction.
Fig 3.
Logistic fits on proportions of affirmative judgments.
A. Fitted proportions for both shoulder-width groups as a function of aperture width. B. Fitted proportions for both groups as a function of π-number (aperture width / shoulder width). The edges of the colored regions indicate the logistic fits ± one standard deviation.
Table 1.
Results of ANOVAs on critical numbers and parameters of logistic fits.
Fig 4.
Exploratory movements in a representative trial.
A. Starting point, allowed limit in y position, and participant’s translation. B. Time-series of y position plotted as a function of heading angle. C. Heading angle as a function of time.
Table 2.
Results of ANOVAs on the exploratory movement variables.
Fig 5.
Movement variables as a function of aperture width.
A. Linear displacement (for visual and haptic training groups). B. Angular displacement. C. Minimum distance. D. Average number of active motors. Error bars represent standard errors of the mean (SEM).
Table 3.
Results of ANOVA on aperture-normalized exploratory movement variables.
Fig 6.
Aperture-normalized exploratory variables as a function of type of error.
A. Linear displacement. B. Angular displacement. C. Minimum distance. D. Average number of active motors. Error bars represent standard errors of the mean (SEM).