Posts with «emg» label

Recording Functioning Muscles to Rehab Spinal Cord Injury Patients

[Diego Marino] and his colleagues at the Politecnico di Torino (Polytechnic University of Turin, Italy) designed a prototype that allows for patients with motor deficits, such as spinal cord injury (SCI), to do rehabilitation via Functional Electrical Stimulation. They devised a system that records and interprets muscle signals from the physiotherapist and then stimulates specific muscles, in the patient, via an electro-stimulator.

The acquisition system is based on a BITalino board that records the Surface Electromyography (sEMG) signal from the muscles of the physiotherapist, while they perform a specific exercise designed for the patient’s rehabilitation plan. The BITalino uses Bluetooth to send the data to a PC where the data is properly crunched in Matlab in order to recognize and to isolate the muscular activity patterns.

After that, the signals are ‘replayed’ on the patient using a relay-board connected to a Globus Genesy 600 electro-stimulator. This relay board hack is mostly because the Globus Genesy is not programmable so this was a fast way for them to implement the stimulator. In their video we can see the muscle activation being replayed immediately after the ‘physiotherapist’ performs the movement. It’s clearly a prototype but it does show promising results.

It reminds us of the Myoelectric Hand, with humans instead. We featured an EMG tutorial a while back for those curious about this topic. Without taking the merit out of excellent and needed medical research, we all wait for the day that all our bio-signals can be easy read and translated to, let’s say, a huge avatar robot like METHOD-2. Right? Right?…


Filed under: Arduino Hacks, Medical hacks
Hack a Day 10 Jan 12:01

EMG Tutorial Lets You Listen to Your Muscles

What with wearable tech, haptic feedback, implantable devices, and prosthetic limbs, the boundary between man and machine is getting harder and harder to discern. If you’re going to hack in this space, you’re going to need to know a little about electromyography, or the technique of sensing the electrical signals which make muscles fire. This handy tutorial on using an Arduino to capture EMG signals might be just the thing.

In an article written mainly as a tutorial to other physiatrists, [Dr. George Marzloff] covers some ground that will seem very basic to the seasoned hacker, but there are still valuable tidbits there. His tutorial build centers around a MyoWare Muscle Sensor and an Arduino Uno. The muscle sensor has snap connectors for three foam electrodes of the type used for electrocardiography, and outputs a rectified and integrated waveform that represents the envelope of the electrical signal traveling to a muscle. [Dr. Marzloff]’s simple sketch just reads the analog output of the sensor and lights an LED if it detects a muscle contraction, but the sky’s the limit once you have the basic EMG interface. Prosthetic limbs, wearable devices, diagnostic tools, virtual reality — the possibilities are endless.

We’ve seen a few EMG interfaces before, mainly of the homebrew type like this audio recorder recruited for EMG measurements. And be sure to check out [Bil Herd]’s in-depth discussion of digging EMG signals out of the noise.


Filed under: Arduino Hacks, Medical hacks

Open Source Prosthetic Hands Focus on Function and Personality

A reddit user asked for workouts for his brother, who lost his hands. Another user responded with a 3D printed prosthetic.

Read more on MAKE

The post Open Source Prosthetic Hands Focus on Function and Personality appeared first on Make: DIY Projects, How-Tos, Electronics, Crafts and Ideas for Makers.

MAKE » Arduino 16 Jun 16:00

Open Source Prosthetic Hands Focus on Function and Personality

A reddit user asked for workouts for his brother, who lost his hands. Another user responded with a 3D printed prosthetic.

Read more on MAKE

The post Open Source Prosthetic Hands Focus on Function and Personality appeared first on Make: DIY Projects, How-Tos, Electronics, Crafts and Ideas for Makers.

MAKE » Arduino 16 Jun 16:00

DIY cyborg appendage is less exciting than it sounds (video)

When we envision our transhumanist future, it's a little more profound than simply adding a sixth finger... but we suppose you've gotta start somewhere. Instructables user and employee Frenzy gave himself a rather primitive extra digit as part of a project for an Electronics and Robotics class at San Francisco State University. Sadly he doesn't provide step-by-step instructions for building your own cyborg appendage, but it doesn't seem too difficult. Frenzy borrowed heavily from other projects, using EMG sensors to trigger a servo controlled by an Arduino, which he strapped to the back of a glove. Like we said, doesn't seem particularly hard, once you figure out how to get the microcontroller to play nice with the sensors. Obviously this is just one small step step for DIY cyborgs. Next, we need to graph on a few extra arms to make one-man liveblogging a much simpler endeavor. To see Primitive Transhumanism #2: Sixth Finger in action, head on past the break.

Continue reading DIY cyborg appendage is less exciting than it sounds (video)

DIY cyborg appendage is less exciting than it sounds (video) originally appeared on Engadget on Fri, 08 Jun 2012 02:32:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

USB Biofeedback Game Controller lets you play Mario with your guns (video)

Those gun-show tickets you've been offering out to everyone (that nobody ever takes) can suddenly do a lot more, thanks to Advancer Technologies. It's developed an Arduino-based plug-and-play bio-feedback game controller that uses EMG (electromyography) sensors to monitor the electrical activity in your skeletal muscles and turn them into game controls. For example, a bicep twinge represents jump, a gripped fist means run forwards -- as long as you've sufficient definition for those two to be distinctive. Check out the must-see muscle action after the break, or see how it's done at the source link.

[Image courtesy of Dreamworks]

Continue reading USB Biofeedback Game Controller lets you play Mario with your guns (video)

USB Biofeedback Game Controller lets you play Mario with your guns (video) originally appeared on Engadget on Fri, 16 Dec 2011 11:07:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments