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14-06-2009, 09:15 AM
Post: #1
BRAIN COMPUTER INTERFACE A SEMINAR REPORT

.pdf  brain computing.pdf (Size: 570.18 KB / Downloads: 4362)
ABSTRACT
A brain-computer interface (BCI), sometimes called a direct neural interface or a brain-machine interface, is a direct communication pathway between a either accept commands from the brain or send signals to it (for example, to human or animal brain and an external device. In one-way BCIs, computers restore vision) but not both. Two-way BCIs would allow brains and external devices to exchange information in both directions but have yet to be successfully implanted in animals or humans. In this definition, the word brain means the brain or nervous system of an organic life form rather than the mind. Computer means any processing or computational device, from simple circuits to silicon chips. Research on BCIs began in the 1970s, but it wasn't until the mid-1990s that the first working experimental implants in humans appeared. Following years of animal experimentation, early working implants in humans now exist, designed to restore damaged hearing, sight and movement. With recent advances in technology and knowledge, pioneering researchers could now conceivably attempt to produce BCIs that augment human functions rather than simply restoring them, previously only a possibility in science fiction


Brain Computer Interface
Chapter 1.
Introduction
Man machine interface has been one of the growing fields of research and development in recent years. Most of the effort has been dedicated to the design of user- friendly or ergonomic systems by means of innovative interfaces such as voice recognition, virtual reality. A direct brain-computer interface would add a new dimension to man-machine interaction. A brain-computer interface, sometimes called a direct neural interface or a brain machine interface, is a direct communication pathway between a human or animal brain(or brain cell culture) and an external device. In one BCIs, computers either accept commands from the brain or send signals to it but not both. Two way BCIs will allow brains and external devices to exchange information in both directions but have yet to be successfully implanted in animals or humans. Brain-Computer interface is a staple of science fiction writing. In its earliest incarnations no mechanism was thought necessary, as the technology seemed so far fetched that no explanation was likely. As more became known about the brain however, the possibility has become more real and the science fiction more technically sophisticated. Recently, the cyberpunk movement has adopted the idea of 'jacking in', sliding 'biosoft' chips into slots implanted in the skull(Gibson, W.1984).Although such biosofts are still science fiction, there have been several recent steps toward interfacing the brain and computers. In this definition, the word brain means the brain or nervous system of an organic life form rather than the mind. Computer means any processing or computational device, from simple circuits to silicon chips (including hypothetical future technologies like quantum computing).

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22-11-2009, 02:18 PM
Post: #2
RE: BRAIN COMPUTER INTERFACE A SEMINAR REPORT

.pdf  BRAIN COMPUTER INTERFACE.pdf (Size: 570.18 KB / Downloads: 2748)

for more information read
http://en.wikipedia.org/wiki/Brain%E2%80..._interface
http://computer.howstuffworks.com/brain-...erface.htm
http://www.gtec.at/products/g.BCIsys/Bra...erface.pdf

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29-01-2010, 08:32 PM
Post: #3
RE: BRAIN COMPUTER INTERFACE A SEMINAR REPORT

.doc  Brain-Computer Interface BCI report.doc (Size: 1.15 MB / Downloads: 1649)

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06-02-2010, 12:20 AM
Post: #4
RE: BRAIN COMPUTER INTERFACE A SEMINAR REPORT
please request here http://www.seminarprojects.com/newthread.php?fid=29 or http://www.seminarprojects.com/newthread.php?fid=46 for new topic information request.....

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09-02-2010, 05:18 PM
Post: #5
RE: BRAIN COMPUTER INTERFACE A SEMINAR REPORT

.pdf  Brain Computer Interface.pdf (Size: 2.09 MB / Downloads: 1803)

Brain Computer Interface
1. Abstract

A brain-computer interface (BCI) is literally a direct technological interface between a brain and a computer not requiring any motor output from the user. That is, neural impulses in the brain are intercepted and used to control an electronic device. The brain's electrical output is translated by a computer into physical outputs,. such as moving a cursor on a computer screen. To make the computer understand what the brain intends to communicate necessitates monitoring the brain activity. Among the possible brain monitoring methods, the scalp recorded electroencephalogram (EEG) constitutes an adequate alternative because of its good time resolution, relative simplicity and noninvasiveness. The EEG signals are analyzed and mapped into actions inside the computer rendered environment. A BCI allows a person to communicate with or control the external world without using the brain's normal output pathways of peripheral nerves and muscles. Messages. and commands are expressed not by muscle contractions, but rather by electrophysiological signals from the brain. BCls provide an alternative communication and control option for the severely disabled. There has been great success in using cochlear implants in humans as a treatment for non-congenital deafness. There is also promising research in vision science indicating retinal implants may some day prove to be similarly successful in treating non-congenital blindness.
Brain Computer Interface 2. Introduction
2.1. What is a Brain-Computer Interface (BCI)? Since the creation of computer rendered environments, the computers power has been increasing to an amazing speed. Each year, the possibilities offered by a computer are growing extraordinarily. However, the communications with a machine have unfortunately not significantly evolved. We still have to content ourselves of an old keyboard, a mouse and a screen display. It is undeniable that it would be a wonderful evolution to improve our interactions with the machines. Following this idea, eminent computer professionals were concerned about developing a new way of communication using the brain. Based on measures of the electrical activity of the brain, the goal was to discover the user's thoughts in order to execute his orders. To accomplish this prowess, the natural properties of the brain were used: to identify a particular mental activity of the subject, we observe the variation of his mental activities in frequency and in time using an appropriate material. A mathematical algorithm will next analyze the collected data and guess about the subject thoughts. This technology offers creating a completely new way of communication offering lots of possibilities. For example, for persons with movements' disabilities, a BCI could help them to command their electric wheelchair without needing somebody else help, giving them more independence. As another example, we can image substitute some damaged nerves by computers intercepting the brain messages and redirecting them to the muscle. For people having to deal with epilepsy crisis, it would be interesting to improve their knowledge of the different processes that stimulate a crisis and try to avoid them, controlling their own brain as another muscle. ,
Brain Computer Interface The idea of using our brains to directly control a machine isn't particularly new. As far back as 1967, Edmond Dewan described experiments using subjects wired to an electroencephalograph (EEG), which records and graphs the electrical activity of the brain. With practice, the subjects were able to reduce the amplitude of their brain's alpha rhythms, to transmit Morse code to a teleprinter. Research into the Brain Computer Interface, or BCI, began in earnest in the early 70's, when the United States Department of Defense saw the promise of fighter pilots using their minds to directly control their planes. Given the technology of the time, there was limited success, and the program was cancelled. But the groundwork was laid for a field of research now growing rapidly. A major motivation has been to help patients suffering from conditions such as cerebral palsy, or spinal injuries, which inhibit physical control, but which leave intellectual faculties intact. Over the last decade, great advances have been made. Automatic systems capable of understanding different facets of human communication will be at the heart of human-computer interfaces (HCI) in the near future. An HCI which is built on the guiding principle: "think and make it happen without any physical effort" is called a brain-computer interface (BCI). Indeed, the "think" part of this principle involves the human brain, "make it happen" implies that an executor is needed (here: a computer) and "without any physical effort" means that a direct interface between the brain and the computer is required. To make the computer understand what the brain intends to communicate necessitates monitoring the brain activity. Among the possible brain monitoring methods, the scalp recorded electroencephalogram (EEG)

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