| Researchers Work To
Unlock The Mystery Of Autism And Determine Why It's
On The Upswing
[By Kathie Durbin, Columbian. Portland.]
http://www.columbian.com/03202002/world_na/266269.html
It is one of the cruelest tricks fate can play
on parents. A baby appears normal at birth, develops
on schedule, smiles when he hears his parents'
voices, speaks his first words. Then, without
warning, something happens, something terrible
and irreversible. He may develop a sudden fever,
experience frightening seizures, start hitting
and biting for no apparent reason. His speech
flies away. He retreats into his own world.
Eventually the diagnosis is made: autism. It
is a kind of sentence. There is no cure. Until
recently, the only palliatives were acceptance
and unconditional love. But now there is a glimmer
of hope. As the number of families touched by
autism multiplies, scientists are getting funding
to conduct research that finally may unravel the
mystery of autism and uncover the reasons for
its recent dramatic upsurge.
The U.S. Centers for Disease Control and Prevention
now estimates that about 285,000 people in the
United States have autism or related disabilities.
Other reliable estimates range as high as 550,000.
It's hard to come up with a precise estimate.
Though autism was first described in the 1940s,
until the 1970s many autistic children were
labeled retarded or emotionally disturbed. For
years, society blamed autism on "refrigerator
mothers" who withheld love. No one believes
that myth anymore.
Still, autism remains an enigma. There is no
blood test for autism, no single characteristic
behavior, no single known cause. Some researchers
believe the condition is caused by abnormal development
of the parts of the brain that control emotion
and process sensory information. A predisposition
to autism is inherited, though no single gene
is to blame. Its onset may be triggered by environmental
factors.
University of Washington research psychologist
Geraldine Dawson heads one of the nation's leading
autism research programs at the UW Center on Human
Development and Disability in Seattle. Dawson
is directing studies that track brain activity
in autistic children in an effort to understand
why they can't relate normally to other people.
One study is chartingbrain development in 75 young
children over a three-year period.
Elsewhere, new research using computer imaging
has discovered abnormalities in the brains of
autistic people that may explain why their brains
can't sort out or control the flood of information
their senses deliver. The UW is collaborating
with other universities on a study of whether
the timing of the measles-mumps-rubella vaccine
could be linked to the heartbreaking regression
many parents have witnessed in autistic children
who developed normally until their second year.
Dawson is reserving judgment on what is driving
the increase in autism. "Clearly a part of
the explanation is better diagnosis," she
said, but other factors may be in play. "The
increases are occurring with younger children,
higher functioning children. You can't speculate
until the epidemiological research is done."
Research gets a boost. Congress, concerned about
the sharp rise in autism, approved a record $50
million for new research last year. The UW has
applied to become one of five new autism research
centers in the nation. The designation would double
its federal research budget for autism to $2 million
annually and push it to conduct more applied research
that might lead to effective treatments for young
children.
Autism in older children and adults is beginning
to attract attention as well. One UW study is
attempting to find out what it is in the brains
of people with autism that makes them unable to
read others' facial expressions, body language
and voice cues. Felice Orlich, a UW pediatric
neuropsychologist, worked with Microsoft to develop
a chat room called KidTalk for high-functioning
autistic young people. The software simulates
social settings like dinner parties and invites
participants to describe how they would act in
given situations. A psychologist gives them real-time
feedback on their performance.
Researchers at the University of California at
Davis are studying music specifically the music
of Mozart ---- and its effect on the ability of
people with autism to grasp concepts involving
space, time, and mathematics. A laboratory for
learning, a key part of the UW program is its
Experimental Education Unit, a school that serves
250 toddlers and preschoolers. Sixty percent of
the children at any one time are developmentally
disabled; 35 have autism.
Teachers here are racing to help shape the behavior
and intellectual development of children with
autism while their brains are still malleable
enough to change. Studies at UW and elsewhere
suggest that intensive intervention with children
as young as 2 can raise their IQ levels significantly,
improve their speech and decrease their need for
support services. Teachers work with children
individually at play stations. At this age, it's
hard to tell the "normal" children from
those with special needs. That's the idea, says
Principal Jennifer Annabel. "We keep our
expectations high. We never say that a student
can't do anything."
A constant stream of parents, educators and researchers
passes through the school, which also serves as
a laboratory for students working on degrees in
special education and speech therapy. Children
who don't speak, or who shy away from social contact,
get extra encouragement. For instance, at snack
time they are given the most popular snacks to
distribute. Teaching of academic skills is left
to the elementary schools. "We don't do reading
or math in kindergarten," Annabel said. "We
believe this time should be spent on preparedness
and social behaviors." The EEU program is
expensive, but Dawson says it's highly cost-effective.
Early intervention that works could save society
up to $3 million over the lifetime of each child
with autism, she said. "And the impact on
the quality of life for individuals with autism
and their families is immeasurable."
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