Mysteries of the brain – Part 21 : Visual Consciousness

Friends,

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            This is going to be a very short VERITAS mail. There is something incredibly interesting that I read yesterday and I really wanted to share that with people.

            There is a huge amount of external stimulus that reaches our senses every second. It is estimated that about 10 billion bits(10,000,000,000) of visual information reaches our eyes every second. But the eye has its limits. The optic nerve at the back of the retina can transport only 6 million(6,000,000) bits per second to the brain. The visual cortex in the brain processes only about 10,000 bits per second.
And the no of bits that go to form the conscious awareness of what is being seen is only 100 bits per second.

So though we are able to see 10 billion bits every second through our eyes, our perception of what is being seen is formed by only about 100 bits per second: an insignificant amount of information! So the perception of reality is only triggered by the external stimulus: most of it is formed within the brain. We see a little and we make up a huge amount. This is related to  what Aakanksha told us in :
“VERITAS: Mysteries of the Brain Part 20: Hypnosis”

This applies to all senses. We take very little from the outside word- we make up most of our perceived reality. 
John Milton said ” The mind is its own place, and in itself, can make heaven of Hell, and a hell of Heaven.”

Regards
Kanwar

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Go, wondrous creature! mount where Science guides:
Go, measure earth, weigh air, and state the tides:
Instruct the planets in what orbs to run,
Correct old time and regulate the Sun;
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Creative Commons License
Veritas by Kanwarpreet Grewal is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License.

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