Friday, August 14, 2009

Your quivering Voice Supposedly Gives You Away

Emotions are so complex that there really is no way to physically detect liars.

Yet people keep trying to devise instruments to judge stress levels, breathing patterns, perspiration, blood pressure, increased activity in the frontal lobes, and other types of functional brain scanning to distinguish between truth and falsehood.

The polygraph was once considered to be a scientifically dependable method of detecting lies, except that the act of being "polygraphed" creates an enormous amount of stress, and everyone feels guilty about something.

Except for sociopaths lacking a conscience, empathy, or remorse. Consequently, the polygraph is usually used as a prop on the unwary, to squeeze confessions out of suspects. The results themselves are not allowed as evidence in a trial.

Now a voice analyzer has been patented and the inventor, Charles Humble, of the National Institute For Truth Verification, (whatever that is), contends that vocal cords can give you away.

To paraphrase a bit of his lengthy press release:

Humble, the founder of the NIFTV, created the CVSA II (Computer Voice Stress Analyzer). US Patent # 7,571,101, for “Quantifying Psychological Stress Levels Using Voice Patterns."

It should be obvious to all that we speak differently when sad, angry, guilty, depressed, anxious, sleepy, bored, insulted, humiliated, praised, rebuffed, and on and on. Since there is no one location for "lying" in the brain, a lie must be gathered from an array of mysterious places in the brain.

This is why voice stress is no different than polygraph. Same idea, different technology.

There are less expensive ways of obtaining confessions, according to research conducted in China during the Korean War. Under duress, sleep deprivation, disorientation, and continual questioning, most people will ultimately confess to anything, just to end the torture.

People also make notoriously bad eye witnesses.

Scientists currently have to real idea of how the brain works. They understand the functions of nerves, and can detect activity in brains, but how do we think? No one has a clue.

Not even, thank goodness, people like Charles Humble.

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