Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

EEG And EMG Graduation Project Seminar

EEG and EMG Graduation Project, Palestine, An Najah National University Nablus, Nada Hantouli and Abdullah Lubaddeh
by

nada hantouli

on 4 August 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of EEG And EMG Graduation Project Seminar

Brain waves
It is Show Time
EEG & EMG
Nada Na'eem & Abdullah Lubaddeh
.
Outline
EEG are a noninvasive way to look into your brain.
EEG
In our very first part of the project, we attempted to build such EEG machine, we simply wanted to detect and measure the brain waves. And mainly focus on Alpha and beta waves, the ones we could get by relaxation and focusing states.
And we wanted to transform these states into control signals, that we use to move stuff around.
First Trial
start thinking about the tools
The first step in the gathering of EEG signals is to draw the voltages off of the surface of the scalp.

Don’t Forget to prepare your skin.
PASSIVE ELECTRODES
STAGE 1 - INSTRUMENTATION AMPLIFIER
It takes as its inputs 2 voltages, and outputs the difference between the two multiplied by some gain, G, we managed to have our gain of 89.2.
EEG HARDWARE
Then we build the entire filtering and processing units via software

STAGE 2 - 50 HZ NOTCH FILTER

STAGE 3 - 33HZ BAND PASS FILTER
The final Matlab® circuit
Abdulllah’s Brain waves as a result 
Also, Nada’s Brain waves 
Lets Get this Party started 

FINAL STAGE - SOFTWARE INDICATOR OF WAVE TYPES, "PROCESSING" THE DATA
Hardware Graduation Project Seminar
Eng. Haya Samaeneh & Dr. Raed Al Qadi
EMG
Graduation Project -> Part 2
Why we turned out from EEG
* Component
* Electrodes
* Same field( biofeedback)
*Reuse components
*Reuse some ideas
WHY?
In very simple terms:
• Brain sends orders to your hand muscles to contract.
• Ions of the nerves generate a very small voltage difference on your skin.
• We detect measure,
amplify, rectify,
smooth and use this signal.
Key Principle of EMG
Based on these inputs, we made basic hardware and software for all EMG acquisition and manipulation of our 3 applications
Design
Basic Hardware for EMG
Our Engine in Details
Basic Software for EMG
Zero level detection by SW
10 Hz High pass filter for artifacts of movement
1 KHz low pass filter for outside noise(mobiles, AM,FM, others)
Idea of AGC [depend on muscle type, gender, age, fat, ..]
OUR electrodes!

Problems/Some proposed Solutions:
Our Electrodes ^___^
CONTROLLING AN MP3 PLAYER
HUMAN ARM SIMULATION
LIGHTS ROPE GAME
Surface EMG Applications
Nablus
Full transcript