22-06-2012, 04:17 PM
TECHNICAL SEMINAR ON MIND READING COMPUTER
MIND READING COMPUTER.pptx (Size: 923.9 KB / Downloads: 195)
INTRODUCTION:
People express their mental states, including emotions, thoughts and desires, all the time through facial expressions, vocal nuances and gestures. This is true even when they are interacting with machines.
The ability to attribute mental states to others from their behavior and to use that knowledge to guide our own actions and predict those of others is known as theory of mind or mind-reading.
Existing human-computer interfaces are mind-blind — oblivious to the user’s mental states and intentions.
Even if they do take the initiative, like the now retired Microsoft Paperclip, they are often misguided and irrelevant, and simply frustrate the user.
WHAT IS MIND READING?
Drawing inspiration from psychology, computer vision and machine learning has developed mind-reading machines computers.
Using a digital video camera, the mindreading computer system analyzes a person’s facial expressions in real time and infers that person’s underlying mental state.
Prior knowledge of how particular mental states are expressed in the face is combined with analysis of facial expressions and head gestures occurring inreal time
Software from Nevenvision identifies 24 feature points on the face and tracks them in real time.
The relationship between observable head and facial displays and the corresponding hidden mental states over time is modeled using Dynamic Bayesian Networks.
ADVANTAGES AND USES:
MIND CONTROLLED WHEELCHAIR
This prototype mind-controlled wheelchair developed from the University of Electro Communications in Japan.
A little different from the Brain-Computer Typing machine, this thing works by mapping brain waves when you think about moving left, right, forward or back,and then assigns that to a wheelchair.
This device doesn't give you MINDBULLETS (apologies to Tenacious D) but it does allow people who can't use other wheelchairs get around easier.
The system could send commands to rovers on other planets, help injured astronauts control machines, or aid disabled people.
DISADVANTAGES AND PROBLEMS:
TAPPING BRAINS FOR FUTURE CRIME
Using computer algorithms and functional magnetic resonance imaging, or fMRI, the scientists were able to determine with 70percent accuracy.
Individual brains differ, so scientists need to study a subject's patterns before they
can train a computer to identify those patterns or make predictions.
In the Dec.19, 2006, issue of The Economist, an article questioned the scientific validity of the notion of free will: Individuals with particular congenital genetic characteristics are predisposed, if not predestined, to violence.
Max Planck Institute, neuroscience and bioscience are not at a point where we can
reliably predict human behavior.
CONCLUSION
Tufts University researchers have begun a three-year research project which, if successful, will allow computers to respond to the brain activity of the computer's user. Users wear futuristic looking headbands to shine light on their foreheads, and then perform a series of increasingly difficult tasks while the device reads what parts of the brain are absorbing the light. That info is then transferred to the computer, and from there the computer can adjust it’s interface and functions to each individual.