Thread View: alt.sci.physics.new-theories
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Started by sle...@copley.bu
Wed, 10 Nov 1993 13:12
Need refs on Spherical Harmonics
Author: sle...@copley.bu
Date: Wed, 10 Nov 1993 13:12
Date: Wed, 10 Nov 1993 13:12
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3676 bytes
RADICAL NEW BRAIN THEORY I have come up with a very interesting new theory on the way the brain represents spatial patterns by way of harmonic resonant interactions between electrically coupled neurons. The big advantage of using such resonances is that a simple physical system, for example a bell, is capable of responding to and reproducing fantastically complex spatial patterns, i.e. the harmonics of the bell, in a remarkably robust manner using simple dynamical interactions, and can encode those complex spatial patterns in a simple and highly compressed rotation invariant code, i.e. the oscillation frequency corresponding to the harmonic pattern. This is a radically new theory, and suggests an entirely new mode of communication between neurons in the brain. I have performed a number of computer simulations which have confirmed the validity of the theory by accurately reproducing a large number of visual phenomena by way of a single simple mechanism. NEED REFERENCES ON SPHERICAL HARMONICS I would now like to extend the orientational harmonic theory to explain three-dimensional harmonics, in order to explore the kinds of spatial structures that can be represented by this kind of system. In order to do this, I need to read up on spherical harmonics. I have found a number of books in the library full of fantastically elaborate differential equations, etc, but that is NOT what I am looking for. What I want is either a catalogue of the kinds of patterns represented by the first few harmonics, or a SIMPLE description of how I could write a computer program that would reproduce these patterns. For example, some astronomy books explain how the sun is constantly oscillating, or ringing like a bell, and the fundamental harmonics of these oscillations include: bulging all over, then shrinking all over, alternately bulging in the northern hemisphere while shrinking in the southern, and the inverse, alternately bulging at the equator and shrinking at the poles... bulging at the equatior and at a northern and southern "temperate" lattitude, while shrinking elsewhere... etc, etc... in other words, this set of harmonics defines a series of alternating subdivisions by lattitude. Another set of harmonics defines a similar alternation by longitude, creating alternating "orange slices". Combinations of these two modes of oscillation produce checkerboard patterns, and so forth. Each of these patterns corresponds to a particular temporal waveform or oscillation frequency which therefore represents that pattern in a rotation invariant manner. The bizzar patterns seen in electron orbitals are yet another example of spherical harmonics. Does anybody know of a reference that would list these different pattern types, or give equations that are simple enough that I could type them into my computer and generate families of these patterns myself? I have neither the inclination nor the ability to plummet the depths of the differential equations defining such systems, I only want to look at the resultant patterns. Can anybody out there help me? -- (O)((O))(((O)))((((O))))(((((O)))))(((((O)))))((((O))))(((O)))((O))(O) (O)((O))((( sle...@park.bu.edu )))((O))(O) (O)((O))((( Steve Lehar Boston University Boston MA )))((O))(O) (O)((O))((( (617) 424-7035 (H) (617) 353-6741 (W) )))((O))(O) (O)((O))(((O)))((((O))))(((((O)))))(((((O)))))((((O))))(((O)))((O))(O)
Re: Need refs on Spherical Harmonics
Author: bda...@nmsu.edu
Date: Mon, 15 Nov 1993 14:32
Date: Mon, 15 Nov 1993 14:32
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Steve Lehar (sle...@copley.bu.edu) wrote: re: spherical harmonics I assume from the text of your news that you would like a time dependent computer program program: send me a mailing address, and I'll mail you a short FORTRAN program which should meet your needs. Brian Davis bda...@nmsu.edu
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