| Conditions: |
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Autism Spectrum Disorder - Developmental Language Disorders |
| Purpose: |
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Among the most commonly reported symptoms of autism is heightened sensitivity to sensory
stimuli. Children and adults with autism spectrum disorders often react with aversion to
various sounds (e.g., by covering their ears and screaming) especially at an early age. The
investigators believe that this is because autism spectrum disorders affect how sensory
input is experienced. Therefore, the purpose of this study is to investigate sensory
processing abnormalities in autism spectrum disorders, or, in other words, to evaluate how
and why children and adults with autism spectrum disorders experience external sensory
information (vision, audition, touch) differently than healthy children and adults.
Because some of the same abnormalities are also reported in children and adults with
developmental language disorders such as language delay or dyslexia, the investigators are
also interested in how that population experiences external sensory information.
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| Study Summary: |
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To study how sensory information is processed by the brain, we primarily use an instrument
called MEG (MagnetoEncephaloGraphy), which measures the magnetic brainwaves emitted by our
brains. The device does not have any output (i.e., there is no magnetic field); it only
measures the waves produced in the brain.
We measure those waves as the participants in the study listen to, view, or otherwise
experience simple, non painful, stimuli. For instance, participants may listen to words
while sitting in the MEG room, and watching a movie with the sound turned off.
We then combine this information with pictures of the brain from MRI (Magnetic Resonance
Imaging - when available), to get an idea about both the anatomy and the function of the
brain, so that we can study how the brains of populations with autism spectrum disorders or
language disorders may be different from those of healthy populations.
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| Criteria: |
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Inclusion Criteria:
- All of the following criteria must be met by all participants:
- The participant or the participant's legal guardian is able to understand and is
willing to comply with the requirements of the study
- The participant meets the age requirements (6-45 years old)
- The participant or legal guardian has signed an Informed Consent Form specific
to this study, and is able to understand the consent form.
- The participant must have English as their first language.
- The participant must have a non-verbal IQ > 80
- For the ASD/language disorder group only:
- Autism Spectrum Disorder: Participants must meet criteria for Autism Spectrum
Disorder on BOTH the ADI-R and the ADOS.
- Language Disorder: Participants will evidence expressive and receptive language
disorders as indicated by a combination of standard scores 1.3 Standard
Deviations below the mean for their age on at least 3 of the 4 Core Subtests of
the CELF-IV, and on at least one of the following: Test for the Reception of
Grammar, Expressive Vocabulary Test, or the Peabody Preschool Vocabulary Test
will be included.
Exclusion Criteria:
- The following exclusion criteria apply to both control and autism groups:
- Any volunteer for whom informed consent cannot be obtained
- Volunteers diagnosed with a mental condition such as depression, anxiety,
aggression, hyperactivity, attention deficit disorder (with or without
hyperactivity).
- Volunteers with metal braces, extensive dental work involving metals, implanted
electromagnetically activated medical equipment (cardiac pacemakers,
neurostimulators, functioning infusion pumps), all of which would interfere with
the MEG signal, will be excluded from the MEG portion of the study
- Volunteers with any medically diagnosed sensory loss
- Volunteers with a known genetic disorder (e.g. Tourette's syndrome, etc), or
other medical condition affecting the brain, such as progressive encephalopathy
as well as those who are on high doses of multiple anti-seizure medications and
have frequent, uncontrolled seizures
- Asphyxia at birth or any other time, premature birth (Greater than 37 weeks
gestation)
- For the control group only
- Volunteers who score below the autism spectrum cut-off (in the normal range)on
the ADOS and SCQ
- Volunteers on any sort of neuro-psychopharmacological treatment (including
antidepressants, stimulants, antipsychotics, anticonvulsants, benzodiazepines).
- For the autism group only
- Children or adults not meeting criteria for autism spectrum disorder
- Volunteers with co-morbid disorders such as tuberous sclerosis or fragile X.
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| NCT ID: |
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NCT00956579 |
| Primary Contact: |
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Principal Investigator
Tal Kenet, Ph.D
Massachusetts General Hospital
Alyssa Orinstein, Rsch Coord
Phone: 617-966-9766
Email: TRANSCEND@partners.org
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| Backup Contact: |
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N/A |
| Location Contact: |
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Charlestown, Massachusetts 02129
United States
There is no listed contact information for this specific location.
Site Status: Recruiting |