On 11 Apr 2013, at 17:28, Craig Weinberg wrote:
On Thursday, April 11, 2013 11:07:01 AM UTC-4, Bruno Marchal wrote:
On 10 Apr 2013, at 17:24, Craig Weinberg wrote:
On Saturday, April 6, 2013 6:49:45 AM UTC-4, Bruno Marchal wrote:
On 06 Apr 2013, at 01:51, Craig Weinberg wrote:
You already are aware of the relevant aspects of your brain
function, and aware of them in a way which is a million times more
detailed than any fMRI could ever be.
No, you bet on them. You are not aware of your brain, in any direct
way. Some antic believed consciousness comes from the liver. That
consciousness is related to a brain is a theory, there are only
evidence, we cannot experience any theory.
By the same understanding that we know the brain is more likely to
be the seat of consciousness than the liver, we also know that
whatever we experience personally is most available impersonally as
brain activity. We can manipulate brain activity magnetically and
experience a change in our consciousness, when the same is not true
of any other organ. This does not mean that our experience is
caused by the brain or that brain characteristics can be translated
into conscious qualities, but the correlation shows us that what an
fMRI reveals is the correlation of events between space-time body
and sensory-motor self. Far from being a map, most of the private
experience is utterly opposite and unrecognizable to any of the
forms or functions on the 'other side.'
I was just saying that we are aware of our experience, then we
built theories. Some of those theories are instinctive, other are
build during early childhood, and others are brought by long
histories. We are not experiencing a brain. In fact we can't
according to the usual theory that there are no sensory neurons in
the brain.
If we are sitting inside of an airplane, it could be said that we
don't 'directly experience' the airplane, as we might not be able to
tell the difference, if we woke up there, between the seats on a
plane and the seats on a train. If a piece of the plane fell off
though, then we would be able to infer air travel. The same goes for
the brain. We are only aware of it when some unexpected experience
is presented. Tinnitus, vertigo, visual phosphenes, proprioceptive
changes, phantom smells, etc. All of these give us direct
experiences of our own neurology which are beyond theory. It's multi-
layered, so that on one level we do hear a sound that sounds like it
is coming from outside of our body, but on another level we can test
and understand that it can't be.
As much as it is quite plausible, the brain existence is theoretical.
Tinnitus, vertigo, visual phosphenes, proprioceptive changes, phantom
smells, etc. All of these give us *direct* experiences of tinnitus,
vertigo, visual phosphenes, proprioceptive changes, and phantom
smells, and provide only *indirect* evidence that, perhaps, there is a
brain, in some possible reality.
Both inside and outside of the body, and the body themselves are
theoretical constructs, which might have, or not, some reality,
primitive or not.
Bruno
Craig
Bruno
Craig
Bruno
http://iridia.ulb.ac.be/~marchal/
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