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This nOde last updated July 1st, 2003 and is permanently morphing...
(1 Cauac (Rain) / 7 Tzec - 79/260 - 12.19.10.6.19)
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microtubule
microtubule (mì´kro-t¡´by¡l,
-ty¡-) noun
Any of the proteinaceous
cylindrical hollow structures that are distributed throughout the cytoplasm
of eukaryotic cells, providing structural support and assisting in cellular
locomotion and transport.
- mi´crotu´bular adjective
 |
 |
| Top: Two states of tubulin in which
a single quantum event (electron localization) within a central hydrophobic
pocket is coupled to a global protein conformation. Switching between the
two states can occur on the order of nannoseconds to picoseconds.
Bottom: Tubulin in quantum coherent superposition of both states. |
Floating within the cosmic golden
egg, the Hindu god Vishnu rests against Ananta, the many-headed serpent
of infinite
time, before initiating the creation of a new universe in this eighteenth
century Indian gouache.
According to myth, the universe is
constantly created and destroyed; before each successive creation, Visnhu's
navel sprouts a |
The representation of a localized self is derived from a construction path with signal integration by superposition of internal states onto a particle-like structure. This has been described by molecular automaton theory, in particular by the microsite ion channel model (Arhem, 1996).
The advantage of a quantum-mechanical
system for generation of the self arises from its non- local quality and ability
to determine the evolution
of a system as a whole (Stapp, 1995). The dilemma is that this system only works
non-locally as long as it does not come to a decision by collapse of the wave
function or decoherence. Perceptions
in our mind, however, are decisions on spatiotemporal states. Accordingly, any
representation group of the neuron is strictly classical and local. We will
again encounter the previously discussed inconsistency arising from an irreducible
mental state, this time described by a coherent quantum-mechanical
operation, and its attempted correlation with a reducible neural state. The
resolution of this dilemma is attempted by a "fractal
approach" to the structure of consciousness.
 |
|
Dendrites
in relation to Microtubules |
A fractal or self-similar structure contains the
construction principle of the whole in each part. Any path mapping
the self onto subspaces inevitably entails a correlation to a proportionally
downscaled whole. By iterative affine transformation, a fractal construction
operates on distinct elements (Dubois, 1997). This renders a fractal local
by operation and non- local by representation. A substrate for a fractal
structure may be composed of coherent membrane lipid arrays surrounding
ion channel proteins. Interestingly, these lipid lattices are affected
by ion distribution and undergo extended coherence just in a narrow range
around mammalian body temperature. This renders the system resistant to
decoherence by heat-invasion (Becker and Rahmann, 1995; Perillo et al.,
1994). The fractal model could be a supplementation to the microtubule
theory. We may think of a multi-layer or sandwich model for the generation
of consciousness: The outer layer is constituted by the neuronal cell membrane
and works as "fractal antenna"
for ion flux
excited
by action potentials. The inner layer is composed of a multi-microtubular network
underneath
the membrane and houses the self. An interface
between both layers may be given by an electromagnetic
field
generated by ion fluctuations. This field modulates the microtubular quantum
mechanics and entangles it with coherent lipid arrays in the cell membrane.
The multi-layer theory would smoothly integrate field, microsite, and microtubule
model.
(Erhard Bieberich (March 8th, 1999) "Neurochemical analysis of molecular interaction in neurochips may reveal internal mental states" - quantum mind)
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