Aspies For Freedom

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The previous thread started by Autistic_Shoes got me thinking...

I theorized that a mutated "neurological patterning" gene is the root of ASDs - one copy results in Aspergers while two results in more "classic" autism.  Since once copy of the mutant gene which produces Aspergers can also frequently produce socially beneficial traits, the gene has been selected for rather than against.

To take the idea further, I think that the gene may not be involved in specific neurological wiring, but rather in the patterning of brain wiring. And that changes in the gene cause a more random patterning as opposed to the more common pattern found in most NTs. The random patterning is what produces such a wide array of cognitive and sensory changes in people with ASDs and why it is so hard to "classify" ASDs, "classic" autism, Aspergers, etc.

These are the main areas that I think are involved:

I - sensing.  Typical patterns produce a mixture of visual/auditory/tactile (the main ones) sensing. Random patterning will produce some combination of enhanced sensing and decreased sensing (simplistically, maybe there are 3 wires and rather than one in each plug, 2 go into the same area and one area is left with no wire or maybe 3 go in the same area and 2 are left with no wire...Alternatively, there may simply be more wires but they don't all go to the typical places.)

II - cognitive processing. Typical patterning will produce a mixture of visual/verbal/math processing functions.  But, similiar to sensing above, random patterning produced changes with increased cognition in some areas and less in others.

III - communication.  This may be largely a result of I and II, but also may be separately influenced by neuronal patterning.  The ability to form and control speech, emotions, and motor/muscle movement could also be subject to the same random patterning processes.

If this hypothesis is true, then it should be possible to "diagnose" ASDs more definitely by assessing skills in these areas.  An "average" score could be determined with a large cross-section of presumed NTs (who would still have some minor variations across the areas).  ASDs would have significant increases in some areas and deficits in others. The specific areas would not matter, but rather the pattern of large shifts in sensing/cognitive/communicative abilities.

An interesting corellary to the above hypothesis is that other neurological conditions like dyslexia, OCD, ADD/ADHD, Tourettes etc could be the result of similiar changes in wiring, but involve specific wires or a specific subset of wires.  In contrast, ASDs involve patterning of large groups of wires hence the broader array of effects and the frequent overlap.      
Apparently some people dislike it when people make more distinctions between different conditions on the autism spectrum,

Quote:
I theorized that a mutated "neurological patterning" gene is the root of ASDs - one copy results in Aspergers while two results in more "classic" autism.��Since once copy of the mutant gene which produces Aspergers can also frequently produce socially beneficial traits, the gene has been selected for rather than against.


The general consensus among autism geneticists is that it's not a simple, Mendelian-type switch like this and that there are anywhere from 6 to 20 genes involved.

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Since once copy of the mutant gene which produces Aspergers can also frequently produce socially beneficial traits


Like, um, what? Kind of drawing a blank on how AS improves social traits...

This is kind of similar to an old Wired article though--it posed that Silicon Valley kids have a high rate of autism because the high concentration of ASD parents makes "asossative mating" possible(autistic people seeking autistic mates)

Yeah, there is not such clear-cut distinctions between diagnostic categories (just yesterday the psychologist was talking to my mom saying that my diagnosis seems consistent with Autistic Disorder compared with Asperger's Disorder - which both me and my parents were bewildered that this was even coming up, that he may think that Asperger is not autism).

Just as diagnostically it's not a clear-cut thing (and when it is clear-cut the diagnosis, that doesn't imply a uniformity of any other degree), genetically it's quite complex and can't be put down to a single allele.

earthmonkey Wrote:
Yeah, there is not such clear-cut distinctions between diagnostic categories (just yesterday the psychologist was talking to my mom saying that my diagnosis seems consistent with Autistic Disorder compared with Asperger's Disorder - which both me and my parents were bewildered that this was even coming up, that he may think that Asperger is not autism).

Just as diagnostically it's not a clear-cut thing (and when it is clear-cut the diagnosis, that doesn't imply a uniformity of any other degree), genetically it's quite complex and can't be put down to a single allele.


Asperger is a form of autism.  I think most people with some knowledge on this subject would agree.

Lizmom23 Wrote:
The previous thread started by Autistic_Shoes got me thinking...

I theorized that a mutated "neurological patterning" gene is the root of ASDs - one copy results in Aspergers while two results in more "classic" autism.


The actual research contradicts your hypothesis.  Multiple genes are involved, none of them are simple on/off, even in the way you posit.


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And that changes in the gene cause a more random patterning as opposed to the more common pattern found in most NTs.


This has not been borne out by brain imaging studies.  Organization might differ from "average", but it does not appear to be more random.

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