Scientists trace facial gestures back to their source. before a smile appears, the brain has already decided
Peer-Reviewed Publication
Updates every hour. Last Updated: 21-Jun-2026 19:16 ET (21-Jun-2026 23:16 GMT/UTC)
Every time we smile, grimace, or flash a quick look of surprise, it feels effortless, but the brain is quietly coordinating an intricate performance. This study shows that facial gestures aren’t controlled by two separate “systems” (one for deliberate expressions and one for emotional ones), as scientists long assumed. Instead, multiple face-control regions in the brain work together, using different kinds of signals: some are fast and shifting, like real-time choreography, while others are steadier, like a held intention. Remarkably, these brain patterns appear before the face even moves, meaning the brain starts preparing a gesture in advance, shaping it not just as a movement, but as a socially meaningful message. That matters because facial expressions are one of our most powerful tools for communication and understanding how the brain builds them helps explain what can go wrong after brain injury or in conditions that affect social signaling, This may eventually guide new ways to restore or interpret facial communication when it’s lost.
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