6 types of autism and 2 forms of Asperger's?

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I attended a CHADD group because the Calendar mentioned ADHD and Asperger's of which I'm sure I have both, having grown up Dx'ed as ADHD after an earlier opinion of autism.
The guest speaker was Dr. Michael Linden who I've come to understand has an extensive history in brain scan research, he was there to raise awareness of his Neurofeedback clinic. Long story short; he showed lots of PET scans and EEGs, and at various points would mention '6 subtypes of autism and 2 different kinds of AS' that he and his colleagues have discovered.

For the last several months I've been aware of The Spectrum, but this is news to me that they can identify distinct 'paint by numbers' patterns of autism all along the spectrum, unless of course it's all a selling point for this program, but the guy didn't strike me the least bit as a NT, especially when he traced ADHD within his own family history

I've never heard of that before, but it sounds interesting. I will have to look this guy up.

Did he say anything about how they come off? What the differences are by symptoms?

I've never heard of that, so I'd like to know more

It seems there are four types of Asperger Autism ( my theory, and I am no psychiatrist, so I could be wrong):

#1 Nervous and extrovert
#2 Emotionless and extrovert
#3 Nervous and introvert
#4 Emotionless and extrovert

It seems some aspies can be very extroverted, but they don't seem to realize people don't like them most of the time, or simply avoid them. Many of them seem to be emotionless, but some of them seem to have emotional problems. Of course, I am making assumptions based on the posts I have read here.

This interview explains what he was saying to some extent:

http://www.autismspot.com/blog/Neurofee ... ael-Linden

From http://www.attentionlearningcenter.com/ ... atment.htm


"Dr. Linden has identified 4 subtypes of Autism. They are:

(1) Over Focused/Over Aroused Pattern (High Beta)
(2) Abnormal EEG/Seizure Pattern
(3) High Delta/Theta
(4) Low Voltage/Metabolic.

Dr. Linden is in the process of identifying two distinct EEG patterns with the Asperger's patient. Both of these patterns show a disconnection in the areas of the brain associated with recognizing facial gestures, emotions and expressing feeling. These EEG patterns may be the first biological markers available to diagnose Autism and Asperger's."

I had a similar conversation with my old uni lecturer who works in this field. He says that kids need to do this (neurofeedback sessions) before the age of 7 in order to get maximum results. After this age it makes much less of an impact, particularly for adults.
He spoke mainly about ADHD to me (though he also works with ASDs) and said that they consider labels such as autism and ADHD to be unhelpful. It is better to refer to the actual individual brain structures that are affected in each person, as this is more specific.
He said they have around a 60% success rate I think, with ADHD. People can improve significantly, but cannot become 100% "cured".

from: http://www.edmontonneurotherapy.com/neu ... utism.html

Using QEEG brain mapping procedures to evaluate children diagnosed with autistic spectrum disorders, Dr. Michael Linden and colleagues at the Attention Learning Centers have identified four distinct patterns (phenotypes) of autism:

Over Focused/Over Aroused Pattern (excessive High Beta activity); associated with obsessing, overfocusing, and anxiety.
Abnormal EEG/Seizure Pattern.
Excessive Delta/Theta Activity; associated with cortical slowing and inattention, impulsivity, and hyperactivity.
Metabolic/Toxic Pattern of lower overall EEG activity; associated with low voltage EEG of less than 5 microvolts.
Mu Activity Pattern; associated with social skills problems.
Connectivity Abnormalities
The high Beta and connectivity abnormalities subtypes are the most commonly seen EEG; occurring in about 50-60% of in ASD children. The Excess Delta/Theta and Abnormal EEG/Seizure are the next most common at about 30-40% of ASD children. The MetabolicToxic Pattern of low EEG voltage accounts for about 10% of cases.

Dr. Linden and colleagues have also reported that children with Asperger's Syndrome frequently show a pattern of excessive Theta/Alpha slowing in the right temporal-parietal region and low connectivity between right temporal-parietal regions and other brain regions; especially with frontal lobes. Both of these patterns suggest a disconnection in the areas of the brain associated with recognizing facial gestures, emotions and expressing feeling. These EEG patterns may be the first biological markers available to diagnose Autism and Asperger’s.

I'm nervous, emotional and introverted.

Well, technically, it would be eight forms of autism, since Asperger Syndrome is variant of autism.

Interesting..i think that i would be the nervous introvert....as that's just how i feel all the time

I know I have increased theta waves, but I'm not impulsive or hyperactive and never have been in my life...

I have been trying to find my EEG results to see more data but unfortunately they seem to have been eaten by the computer system.

I'd be interested to know how some of the above posters know what their brainwave patterns are. How do I find out? Is there some sort of testing which is easily accessible?

I'm interested in this because after learning about meditation (which is a slowing down of brain activity and a movement from the usual beta down to alpha and delta waves) I came to the conclusion that my brainwaves were probably down there already in their normal state. I don't seem to need to "do" anything to meditate deeply, because I seem to just sort of hang out in that state already. I'd like to know if that hypothesis is true. It's certainly interesting to read that that is very common those on the autistic spectrum.

This all has a similar look as Meyers Briggs/Socionics. As actual operating brains are imagined in ever increasing detail all the different wrings will be known at some point in the future. I think they may look similar to various black box logical models but will have some surprises too.