If the subsystem is a neural area, we do not model the
neural structure, and we do not attempt to represent
the input and output as a set of parallel firing
axons. Instead, we represent the information going
in, coming out, and being stored in the module
by expressions which simply indicate what the information
is, not how it is encoded as neural firing patterns
in space or time.
Thus, this level of analysis and modeling will not tell us
anything about neural structure or neural coding.
A systems approach can help us analyze
a great deal about neural systems but using
an abstract logical description methodology.
We can answer many questions about the system
independently from answering questions
about neural mechanisms and neural encoding.
A system model can be used as a guide in then
constructing a more detailed neural model.
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