Lateral Inhibition 🟡 Medium
Pulsing Grid
A high-contrast grid where intersections appear to breathe and pulse continuously.
Speed: 1.0x
Use the controllers inside the display card to adjust speed or pause animation.
🎮 EXPERIENCE IT FIRST
Before reading the neuroscience explanation below, take a moment to interact with the demo above:
- How does the visual change when you move your eyes or look at different parts of the screen?
- Try slowing down the speed or pausing the animation. Does the wobbly sensation persist?
- Stare at one yellow dot in the center. Do the surrounding dots keep breathing?
🧠 THE SCIENCE
The Pulsing Grid illusion creates a strong sensation of expansion, contraction, and breathing. The grid is drawn with intersecting lines and circular markers that cycle in size and contrast. This stimulates the receptive fields of retinal ganglion cells through lateral inhibition.
Receptive fields in your retina compete via lateral inhibition. The high-contrast intersections appear to glow and breathe as they adjust to neighboring stimulus levels. The brain tries to resolve these rapid changes in contrast and size by perceiving them as depth-based expansion and contraction, which makes the static elements appear to breathe in sync with your breathing patterns.
💡 FUN FACTS
- • Based on the Hermann Grid and Scintillating Grid variants of lateral inhibition.
- • The dots appear to pulsate more aggressively when viewed in peripheral vision.
- • Reducing the grid contrast weakens the illusion, as neural signals are processed more evenly.
📜 WHO DISCOVERED IT
Discoverer: Modern Vision Scientists (2000s)
Expanding on Ludimar Hermann's grid experiments from 1870, modern visual researchers discovered that animating the intersection markers or introducing cyclical changes in size triggers MT/V5 motion pathways, creating a compelling wobbly, breathing effect.