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Article Abstract
A large and a small disk with radii and , side by side, exchange positions repetitively at 1.33 Hz. The motion is ambiguous. If < 0.8 then observers perceive a single large disk jumping back and forth across a small static disk. But if / > 0.8, observers perceive two static disks that expand and contract in counter phase, with no motion across the gap between the disks. Observers respond to the movement of the , which is greatest when < 0.8.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12351517 | PMC |
| http://dx.doi.org/10.1177/20416695241286023 | DOI Listing |
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