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Questions/Feedback greatly appreciated.
The brain is divided into two primary sections. The cortex and the subcortex. The cortex is the outer surface of the brain (the cerebrum anyway) and is only 1.5-5mm deep. The cortex is has significantly denser neural connectivity than any other part of the brain. The cortex is especially associated with non-life-sustaining cognitive functions. Things like feeling, sensory perception, higher cognition, etc. are all primarily in the cortex. What is especially interesting about the neurons in the cortex itself is that they are look about the same, they are simply networked differently. This is very nice because it means that we can likely establish some general principles of the neural basis for intelligent behavior simply by using networks of identical individual neurons.
On Feb 17, 2006, at 8:34 AM, Chris Waggoner wrote:
This is just what I am looking for. Comments as I go:
-some grammar mistakes and typoes in first two paragraphs
-what does " feeling, sensory perception, higher cognition, etc. are all primarily in the cortex" mean?
-"simply by using networks of identical individual neurons" -- do you mean theoretical neural networks or synthetic neurons?
-what is phoso-lipid membrane and its significance?
-"There are about 100 billion of these things in the human brain." That's 10^8? Is 10^8 big or small?
-I guess you're not finished -- what is the significance of axons and dendrites? As I understand it dendrites spread roots wide to receive electrochemical juices and axons shoot electrochemical juices - thus propagating a signal. (How does this lead to a neural net?)
-why do I care about neocortex in the first place?
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