High School Senior Makes an Award-Winning Prosthetic Finger Using Muscle SpikerShield

— Written by Jelena Ciric —

A pump made of two plastic syringes and a pushing block powered by a stepper motor, one of our Muscle SpikerShields and a 3D-printed base — that’s all that Kiley Branan, a high school senior from Indiana, needed to put together a prototype of a finger that you can open and close by flexing your arm.

If it sounds like a prosthetic device, it’s because that was what Kiley had originally intended it to be. But as she was figuring out the mechanics, the project evolved into a physical therapy tool that can’t replace a limb but can help people who were born without one or have had an amputation to learn kinesthetic and fine motor skills. It is customizable, easy to learn, and best of all — it’s very cheap. With high-tech bionic limbs often being prohibitively expensive, people should at least get a chance to adjust to them at a next-to-nothing cost.

So how exactly does it work? When you’re about to “tell” your muscles to move your limb, your brain sends electrical signals called action potentials to the spinal cord, which then passes on the message to your muscles via motor neurons. But what happens if a person is missing the limb? The message is still being transmitted. What’s missing, apart from the recipient limb, is something to “intercept” the message, gauge and interpret it.

That’s where Kiley’s device comes in. “It detects the nerve signals in the arm when they tell the muscle to move, and then tells the coded computer to push the syringes forward or backward so that they can move the finger. So the device helps detect something that already exists in a person who doesn’t have a finger,” the 18-year-old tells us over Zoom. The device would be helpful on two levels. On the one hand, it would allow for better fine-tuning and customization of the prosthetic limb before it gets made. On the other, it would prepare the person and improve their fine motor skills before they receive their first prosthetic. In a nutshell, Kiley says, it would “make the transition from living without a limb to using a prosthetic as seamless as possible.”

BYB Neuroscience Goes to Penang, Malaysia

We’re ending the eventful year of 2022 grand style – by sending our gear on yet another trip across the world to further our #NeuroRevolution! This time, it was George Town in Penang, Malaysia, where school kiddos got to try their hands at our Claw.

The neuroscience booth was part of an exhibition funded by American Tech Corner-on-Wheels (ATCoW) and organised by Penang Science Cluster, specially designed for primary and secondary school students to spark their interest in STEM. Kudos to the ATCoW team, who have been to about 2 dozen schools and public events in 2022, impacting close to 10,000 students!

If you happen to be nearby, you can follow their FB Page and find updates on ATCoW here.

Learning by Doing: Teach Reiterative Design with Neuroprosthetics

Failure is an important part of the
Reiterative Design Process!

For some students, dealing with failure can be tough. It’s frustrating to encounter obstacles in science! And for teachers – how do you grade a project when a student puts a lot of effort in, but keeps hitting roadblocks?

Many of you already teach like this, but I wanted to share my own recent example of the Reiterative Design Process. Very few things turn out perfect on your first attempt (like the Orange Chicken I attempted to make last night… Not enough sugar?) and require you to learn from several failures or mistakes.

Many students we are working with now are excited about the growing field of DIY Neuroprosthetics, so to help guide students along in their journey, I’ve been working on creating my own prosthetic hands using materials that are accessible to many Middle and High School students!

Three Generations of NeuroProsthetics