Monday, April 14, 2008

You are living 10 seconds in the past!

According to discussion amongst Neuroscientists at the Max Planck Institute for Human Cognitive and Brain Sciences in Germany which was reported in Nature Neuroscience : There has been a long controversy as to whether subjectively 'free' decisions are determined by brain activity ahead of time. Scientist found that the outcome of a decision can be encoded in brain activity of prefrontal and parietal cortex up to 10 seconds before it enters awareness. This delay presumably reflects the operation of a network of high-level control areas that begin to prepare an upcoming decision long before it enters awareness.

This quite literally means that the time it takes for sensory input to travel along nerves and get processed by the brain means we're always "living in the past". The folks at IO9 quip that to make brain / computer interfaces more efficient that we might one day opt to disgard the plodding "consciousness" part of our brains.

{Nature Neurosciewnce via IO9}

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