Dear Guest, Please Register to Download Free Seminar Reports and PPT of each topic. The Download link will be visible only after the registration.Please search the topic before posting.

Please click the Facebook Like Button if you are satisfied

 Subscribe To Get Latest Seminar Reports and PPT

Receive all seminar updates via Facebook. Just Click the Like Button Below

?

Custom Search

brain computer interface

Huge Collection of Computer Science Seminar Topics, Reports and PPT.

brain computer interface

Postby angelrash » Thu Jan 19, 2012 8:17 am

hi
can u pls send me the seminar report,ppt,pdf,for the topic brain computer interface...its very urgent
thank you
angelrash
 
Posts: 2
Joined: Wed Jan 18, 2012 8:40 am

Re: brain computer interface

Postby Prasanth » Thu Jan 19, 2012 2:37 pm

A brain-computer interface uses electrophysiological signals to control remote devices. Most current BCIs are not invasive. They consist of electrodes applied to the scalp of an individual or worn in an electrode cap such as the one shown in 1-1 (Left). These electrodes pick up the brain’s electrical activity (at the microvolt level) and carry it into amplifiers such as the ones shown in 1-1 (Right). These amplifiers amplify the signal approximately ten thousand times and then pass the signal via an analog to digital converter to a computer for processing. The computer processes the EEG signal and uses it in order to accomplish tasks such as communication and environmental control. BCIs are slow in comparison with normal human actions, because of the complexity and noisiness of the signals used, as well as the time necessary to complete recognition and signal processing.

The phrase brain-computer interface (BCI) when taken literally means to interface an individual’s electrophysiological signals with a computer. A true BCI only uses signals from the brain and as such must treat eye and muscle movements as artifacts or noise. On the other hand, a system that uses eye, muscle, or other body potentials mixed with EEG signals, is a brain-body actuated system.

The BCI system uses oscillatory electroencephalogram (EEG) signals, recorded during specific mental activity, as input and provides a control option by its output. The obtained output signals are presently evaluated for different purposes, such as cursor control, selection of letters or words, or control of prosthesis. People who are paralyzed or have other severe movement disorders need alternative methods for communication and control. Currently available augmentative communication methods require some muscle control. Whether they use one muscle group to supply the function normally provided by another (e.g., use extraocular muscles to drive a speech synthesizer) .Thus, they may not be useful for those who are totally paralyzed (e.g., by amyotrophic lateral sclerosis (ALS) or brainstem stroke) or have other severe motor disabilities. These individuals need an alternative communication channel that does not depend on muscle control. The current and the most important application of a BCI is the restoration of communication channel for patients with locked-in-syndrome.
You do not have the required permissions to download the files attached to this post. You must LOGIN or REGISTER to download these files.
User avatar
Prasanth
Site Admin
 
Posts: 475
Joined: Sat May 28, 2011 6:29 pm



Return to Computer Science Seminar Topics