>>106262858
A still image? 0% chance.
An animated one? 0.01% chance.
A targeted animated one based on a persons psychology or brain scans. 1% chance (if they are old).
A weird shifting pattern, that's not technically horrifying but hacks the human brain and makes it short circuit? 1% chance for the general population young/old.
A full blown auditory visual room or VR headset that can't be removed, and locking them in there for a full day? 10% chance.