The room is being measured, not resized
Seeing a table as tiny or a doorway as far away does not mean the furniture has changed. The brain is estimating size and distance from visual signals—such as an object’s edges, its position in the room, and how it relates to nearby objects. When those estimates shift, familiar surroundings can seem suddenly out of scale even though the scene itself is unchanged.
That distinction matters because size and distance are linked in perception. If an object seems farther away than it is, it may also seem smaller; if it seems unusually close, it may appear larger. In an episode, the brain’s reading of those relationships can feel convincing, not like a deliberate imagining.
Different distortions, one unsettling effect
A perceived object-size change is sometimes called micropsia when things look smaller and macropsia when they look larger. Changes in apparent distance have their own terms: teleopsia for seeming farther away and pelopsia for seeming nearer. These words describe what a person experiences; they do not identify a single cause.
The broader pattern is sometimes called Alice in Wonderland syndrome. It can occur in different circumstances, including with migraine, and the name refers to perceptual distortions—not to a separate fantasy world. What makes an episode so disorienting is that the room’s familiar landmarks remain recognizable while their apparent scale or spacing no longer fits expectation.
A doorway that seems miles away can therefore feel like a change in the room, when the change is in the brain’s estimate of the room. The furniture stays where it is; the sense of how much space it occupies does not.
