Ambiguous Gestalt 🟡 Medium
Rubin's Vase
Do you see a classic ornamental vase in the center, or two face profiles staring at one another?
Use the controllers inside the display card to interact with the visual triggers.
Use the controllers inside the display card to interact with the visual triggers.
🎮 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?
- Use the slider or toggle buttons to reveal the actual geometric layout. Did it match what your eyes predicted?
- Pay attention to whether you can consciously force your brain to switch between interpretations.
🧠 THE SCIENCE
Rubin's Vase is a classic bistable figure-ground illusion. When you look at the image, your brain alternates between seeing a white vase in the center or two black face profiles staring at each other. Both interpretations are mathematically valid, as they share the exact same boundary contours. The brain cannot perceive both interpretations simultaneously. It must perform **figure-ground segregation** (processed in the visual cortex V2 and temporal lobe). When the brain designates the white area as the "figure" (foreground), the black area becomes the "ground" (background), and you see the vase. When it designates the black area as the "figure," you see the faces. The brain's perceptual state is bistable, switching back and forth as it tries to resolve the boundary assignment.
💡 FUN FACTS
- • Edgar Rubin popularized this vase in 1915 to demonstrate how the brain separates figures from backgrounds.
- • The brain can only hold one interpretation at a time; you cannot see both the vase and the faces simultaneously.
- • Studies show that focusing on the center coordinates biases the brain toward the vase, while focusing on the edges biases it toward the faces.
- • This illusion is used in neurology to test how well the visual cortex resolves ambiguous shape boundaries.
🧪 TRY THIS AT HOME
Look at the vase, and try to force your brain to switch interpretations. Focus on the central white area to see the vase. Now, shift your focus to the outer black profiles. Notice how the shape instantly flips in your mind!
📜 WHO DISCOVERED IT
Discoverer: Edgar Rubin (1915)
Danish psychologist Edgar Rubin was investigating how the mind organizes visual fields into distinct objects. He designed the vase-face contour to prove that visual outlines do not belong to both the object and the background simultaneously; rather, the brain assigns the boundary to one or the other.
Educational Resources & History
Rubin's Vase face optical illusion explanation. Discover Edgar Rubin's 1915 figure-ground segregation experiment, bistable perception in V2, and why your brain cannot see the vase and faces at the same time.