FIGURE 1.

Schematic demonstration of the reversal dynamics. The participant observes an ambiguous Necker lattice discontinuously over a certain time interval and perceives it as facing in one orientation. The perceptual representation is postulated to destabilize over time (blue arrow) until the percept becomes so unstable (indicated by the light blue frame) that a perceptual reversal occurs. After the reversal, the perceptual representation is again temporally stable (dark blue frame). Bottom row: Necker lattice stimuli as ambiguous sensory input. Top row: perceptual interpretation of the observer. The instances R indicate perceptual reversals.