Amputees often feel disconnected from their bionic hands. AI could bridge the gap

Researchers tested a bionic hand enhanced with artificial intelligence and sensors on four people missing a hand, including Samoana Matagi.

“Samoana Matagi was one of the four participants in a study that tested the capabilities of a new bionic hand”

Oz Arab Media

With the AI-assisted shared control, participants could reliably grasp a cup and pretend to sip, while without shared control they crushed or dropped it every time.

Oz Arab Media

The work, described in Nature Communications, marks progress toward prosthetics that feel more like natural limbs.

To achieve this, scientists added proximity and pressure sensors and trained the AI to detect not just muscle signals but the intention behind them.

The AI control system learned to detect the tiniest twitch in a muscle that flexes the hand, then activate the machine controller to begin grasping.

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This arrangement lets the hand share control with the brain when carrying out tasks, with the sensors helping gauge object distance and grip force.

Experts say the approach addresses a common frustration: highly capable prosthetics can feel foreign and demand constant attention from users.

“Samoana Matagi was one of the four participants in a study that tested the capabilities of a new bionic hand”

Oz Arab Media

Jacob George notes that people want a hand that blends task goals with subconscious reflexes.

John Downey adds that natural hands rely on reflex loops in the brain stem and spinal cord, and a prosthetic that imitates those reflexes helps users feel connected to their hand.

Even the most advanced bionic hands still require some brain input.

Downey points to a continuum where the same natural hand can thread a needle or lift a child, illustrating a wide dynamic range that robots typically cannot match.

Oz Arab Media

The researchers say the smart hand moves toward a future where prosthetic limbs are more versatile and capable, while preserving the user’s sense of control as part of their own body.