Menu

Artificial Touch Enabled

A quadriplegic 28-year-old man senses touch via stimulation of electrodes implanted in his somatosensory cortex.

Oct 13, 2016
Jef Akst

Researcher Rob Gaunt prepares Nathan Copeland for sensory testing.UPMC/PITT HEALTH SCIENCESFollowing surgery to connect his brain to an array of electrodes, Nathan Copeland, who was paralyzed from the upper chest down in a car accident in 2004, experienced a natural touch sensation in response to stimulation of his sensory cortex, according to a study published today (October 13) in Science Translational Medicine.

“For most tasks that involve manipulation of objects, you’re really relying on the sense of touch to guide movement—you’re not using vision, necessarily,” study coauthor Jennifer Collinger of the University of Pittsburgh told Scientific American. “You don’t have any visual feedback on how hard you’re squeezing it, or what you need to do to maintain stable posture. All of that comes from the sense of touch.”

The researchers implanted a microelectrode array in Copeland’s somatosensory cortex, the brain region involved in touch perception. Once implanted, the researchers delivered mild electrical currents to the electrodes, which can be hooked up to a smart prosthetic arm. Initially, Copeland felt nothing, but after about a month, the microstimulation began to produce tactile sensations, which he described as “possibly natural” most of the time. And once it started happening, the sensory feelings continued for the duration of the six-month study.

“I can feel just about every finger—it’s a really weird sensation,” Copeland said about a month after surgery, according to a press release. “Sometimes it feels electrical and sometimes its pressure, but for the most part, I can tell most of the fingers with definite precision. It feels like my fingers are getting touched or pushed.”

“The ultimate goal is to create a system which moves and feels just like a natural arm would,” study coauthor Robert Gaunt of Pittsburgh said in the release. “We have a long way to go to get there, but this is a great start.”

November 2018

Intelligent Science

Wrapping our heads around human smarts

Marketplace

Sponsored Product Updates

Slice® Safety Cutters for Lab Work

Slice® Safety Cutters for Lab Work

Slice cutting tools—which feature our patent-pending safety blades—meet many lab-specific requirements. Our scalpels and craft knives are well suited for delicate work, and our utility knives are good for general use.

The Lab of the Future: Alinity Poised to Reinvent Clinical Diagnostic Testing and Help Improve Healthcare

The Lab of the Future: Alinity Poised to Reinvent Clinical Diagnostic Testing and Help Improve Healthcare

Every minute counts when waiting for accurate diagnostic test results to guide critical care decisions, making today's clinical lab more important than ever. In fact, nearly 70 percent of critical care decisions are driven by a diagnostic test.

LGC announces new, integrated, global portfolio brand, Biosearch Technologies, representing genomic tools for mission critical customer applications

LGC announces new, integrated, global portfolio brand, Biosearch Technologies, representing genomic tools for mission critical customer applications

LGC’s Genomics division announced it is transforming its branding under LGC, Biosearch Technologies, a unified portfolio brand integrating optimised genomic analysis technologies and tools to accelerate scientific outcomes.