Observed hand-movement reversals postdictively bias ambiguous motion judgements
Osamu Nomura, Kenichiro Ogawa · 2026
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Description
Nomura and Ogawa show that watching someone else's hand can rewrite what you think you saw. In the stream-bounce display, two bars cross and can be seen as passing through or bouncing off each other. A person facing the viewer moves a mouse on a slider, a motion that cannot affect the bars, reversing either before, during, or after the bars meet.
Viewers know the hand is irrelevant, yet its reversals push them toward seeing a bounce, and steady motion pushes them toward streaming. A reversal that lands after the meeting still bends the judgment, proof that perception keeps editing for a brief window after the event. The authors call the other's movement a context prior folded in after the fact.
Catalog record
| CREATOR | Osamu Nomura, Kenichiro Ogawa |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 70 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |