Visual Memory
Remember the lit-up squares.
A grid lights up briefly. Click only the squares that were lit. Grid grows each round.
The Zehano visual memory test flashes a set of tiles on a grid for a few seconds. The screen clears. You click the tiles that lit up, in any order. Each round increases the number of tiles and the grid size. Your highest level reached measures how many positions you can hold in visuospatial memory at once.
How to use the Visual Memory Test
- Study the pattern. Tiles light up briefly on a grid. Note their positions.
- Click the tiles you saw. After the lights go out, click the squares that flashed. Order does not matter.
- Avoid wrong tiles. Clicking an unflashed tile loses you a life. Three mistakes ends the game.
- Advance levels. Get a level right, more tiles appear in the next round.
- Track your best. Your highest level is saved automatically in your browser.
Benefits
- Pure visuospatial memory. Tests spatial memory without verbal labelling, a cleaner measure than digit span.
- Quick reset. A full session takes two to three minutes. Easy to use as a daily check.
- Sensitive to fatigue. Performance drops noticeably with sleep loss and mental fatigue.
- No signup needed. Plays entirely in your browser. Scores saved locally on your device.
The science
Visuospatial working memory holds roughly four to seven items for short durations, similar to other working memory systems. The grid-based pattern test, sometimes called the Corsi block test in its physical form, has been used in cognitive assessment since the 1970s. Performance correlates moderately with spatial reasoning, navigation ability, and overall fluid intelligence. Like other working memory measures, it is sensitive to sleep loss, anxiety, and several neurological conditions.
Visual memory performance can be partially compensated through chunking visual patterns into meaningful shapes (a row, a corner, an L-shape). Strong scorers often use this strategy unconsciously.
Tips for best results
- Look at the centre of the grid, not at individual tiles, to get a broader visual impression.
- Try to see the pattern as a shape rather than individual squares.
- Practise in a quiet room with consistent lighting.
- Compare scores across days, not just within a session.