Skepdick wrote: ↑Tue May 26, 2020 1:35 am
What does "knowledge" look like in the brain? Where are you looking for it?
Oh, OK. Good Question. You’re asking about a section of
the video we are still working on, which will soon fully answers this question. You can already see most of it, if you know what to look for. And, this informaiton is contained in
Steven Lehar’s work. (notice he is currently the
top peer ranked expert in this field). In particular his
“The world in your head.”
Let me summarize.
Basically, the simplest not yet falsified version of the model is as follows.
Take the 3D space you can see, and divide it up into a set of cubic pixels or voxels. Each of these voxels has a unique set of X,Y, and Z values as it’s spatial location in this 3D volume. Now, take a 3D volume of neurons, each neuron in the volume also having an x, y, and z address, of where that particular neuron exists in that volume of neurons. Now the eyes maps what it detects in each of the spots in this 3D volume it is looking at, into this volume of neurons. If the eye detects red light being reflected off of an x,y,z location on the surface of the strawberry, it flags the corresponding x,y,z, neuron to fire with the neurotransmitter glutamate (has an intrinsic redness quality). If the eye detects green light being reflected off of a leaf, at a different x,y,z location, it flags the neuron in that x,y,z, location to fire with glycine (greenness quality). So, you end up with 3D diorama of phenomenal knowledge, with 3D voxel models of the strawberry and leaves, representing what your eyes are seeing. In other words, there is what steve calls a "diorama" of knowledge in your brain, which our brain represents as if it was reality, itself.
You also need some kind of computational binding system, so all these pixels aren’t just stand alone (like in a TV or Camera) where they have no awareness of any of the other pixels. In other words, there is a set of computationally bound neurons, in the shape of the strawberry, all firing with glutamate, all computationally bound together, with the name ‘red’ and the name ‘strawberry’. There is a different set of pixels, in the shape of the leaf, all computationally bound with the word ‘green’ and ‘leaf’.
It is this volume of pixels, laid out in the primary visual cortex,
Jack Galant is detecting, to produce his colored pixels of knowledge, in the brain, to display on the TV screen.
Does that help understand what we mean by the intrinsic qualities of conscious knowledge we are directly aware of?
