18-04-2011, 04:21 PM
PRESENTED BY
VENU
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HISTORY
Started in 1970s
Mainly for Pilots to control their planes
Since 1980s research in this field has been restricted to medicine
COGNITIVE ENGINEERING
The process of receiving signals from the thoughts of a person through different methods is known as 'COGNITIVE ENGINEERING'.
Two basic methods
Invasive and
Non Invasive
INVASIVE METHOD
In this method an electrode called the neurotrophic electrode is implanted in the brain through a brain surgery
It is implanted in the cerebral cortex just above the ear
The implant consists of a thin glass cone of the size of a ball point tip
NON-INVASIVE METHOD
This method doesn’t require a brain implant
The user wears a cap studded with electrodes These electrodes help in transmitting the signals
BRAIN COMPUTER INTERFACE
The system which is used to understand the received signals and translate them to the computer is known as Brain-Computer Interface
This system allows a person to communicate through the electrophysiological signals from his brain