BBC News: Communication Aid for Paralyzed
Hm, I wonder what if they disagreed with something which used some function of the frontal lobe? Would there be unintended blood flow to the brain?
Also, I found it ridiculous to have the project halted because the accuracy was not 100%.
Japanese scientists have developed a device which allows people with severe paralysis to communicate.
The headband - called kokoro-gatari - has been developed to help patients incapable of even the slightest movement, such as blinking.
It works by measuring the one function these patients can still control - blood flow through their brains.
In tests it enabled patients to signal yes or no to a question with an 80% accuracy.
...
If the patient wants to agree with a question they try to activate the blood flow to the frontal lobe of the brain.
They do this by working out mental arithmetic or trying to remember the words of a song.
If they want to disagree they just relax to try to keep the blood flow unchanged.
Hm, I wonder what if they disagreed with something which used some function of the frontal lobe? Would there be unintended blood flow to the brain?
Also, I found it ridiculous to have the project halted because the accuracy was not 100%.