Fig. 3: Saccades contribute to evolving beliefs about goal location.
From: Belief embodiment through eye movements facilitates memory-guided navigation
a Top: actual eye position (black line) and the corresponding saccade-free eye position (red line) of an example trial. Bottom: Comparison of correlation coefficients of target-tracking error (TTE) and steering error (SE) for the actual eye position and saccade-free eye position (horizontal component). Peak correlations within 50% of the distance traveled were selected for each participant. b Correlation between cumulative horizontal saccade amplitude and angular steering error in the visual (top, blue) and inertial (middle, red) conditions. Saccades (within 50% of distance traveled) were pooled across participants for better visualization. Bottom: average correlation coefficients across participants. Asterisks denote the level of statistical significance of the correlation difference within each condition using a paired t-test (*p < 0.05). Error bars: ±1 SEM across participants (n = 8). c Time-course (kernel) of coefficients obtained by linearly regressing the amplitude of the horizontal/vertical component of saccades evoked within 50% of the distance traveled against the corresponding target-tracking error (light blue/red), stop position-tracking error (dark blue/red), and believed target-tracking position (gray). Shaded regions denote ±1 SEM obtained by bootstrapping.
