On Jan 25, 2013, at 4:12 PM, meekerdb <meeke...@verizon.net> wrote:
On 1/25/2013 8:22 AM, Telmo Menezes wrote:
Even the idea that we are unconscious during deep sleep does not
convince me. We could be conscious but without read/write access to
our memories, so how would we know afterwords? But maybe we are
experiencing the same level of consciousness as a bacteria.
People are not unconscious when asleep. People sleep through the
chiming of clocks but will wake instantly if you whisper their name.
Brent
Well under the perspective of consciousness being "fame in the brain",
it could still be possible to be unconscious in sleep but awake when
ones name is spoken, so long that the parts of the brain that listen
and interpret words remain active.
They need not but propagate this information widely and throughout the
brain, to the parts that remember, etc. and thus would (from the
perspective of other parts of the brain) not even be happening.
The neurons are not inactive even during anestesia. What is different
is the signaling is dampened or confused (addition of noise) such that
meaningful neural signals cannot travel as far as they normally which
isolated brain regions from each other.
One surprising fact is how many chemicals can have this affect on the
brain through apparently different pathways. Even the element Xeon is
an effective anesthetic.
Jason
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