Figure 5.

Correlation between cortical effective connectivity and tilt illusion magnitude. The magnitude of the tilt illusion was plotted against the effective connectivity within primary visual cortex from its peripheral to its foveal region, illustrating a correlation across participants between cortical effective connectivity and tilt illusion magnitude. The correlation was observed regardless of whether the tilt illusion magnitude was linked to the absolute effective connectivity under tilted contextual stimulation or to the increase in effective connectivity induced by tilted contextual stimulation. Each point represents a single participant (N = 20), and the statistical values were calculated using Spearman's ρ.