Why the backwards walk terrifies you: the 1973 point-light experiment

aakashgupta · x · 2026-09-08

Why does Nikki from Halloween Horror Nights scare even Art the Clown? Her backwards walk breaks your brain's human-motion model, first shown in Gunnar Johansson's 1973 point-light experiments: viewers reconstruct a body from just 12 moving dots, and corrupted gait sends a 'human but wrong' mismatch signal straight to the amygdala.

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