Vagus Nerve Stimulator for Autism and Other Developmental Disorders

Inclusion Criteria:

1. Children and adults aged 12-40 with intellectual and developmental disability (IDD)and/or autism spectrum disorder (ASD). Participants who are decisionally-impaired willbe eligible with assent.
2. Able to tolerate wearing an Apple Watch, EEG, and sit for a neurocognitive test
3. Be on a stable dose of psychotropic medication for at least one month prior toenrollment
4. Agree not to initiate new or change existing medications or behavior intervention

Exclusion Criteria:

1. Have an active implantable medical device (e.g., pacemaker, implanted hearing aid,etc.) or a metallic device, such as a stent, bone plate, or bone screw
2. Have a comorbid physical or psychiatric disorder which would disrupt ability totolerate vagal stimulation or comply with study demands (e.g., insulin dependentdiabetes, bipolar, etc.)
3. Vagus nerve lesion, damage, or structural abnormality (e.g., lymphadenopathy,neoplasm, previous surgery), or pain (e.g., dysesthesia, neuralgia and/or cervicalgia)
4. Current or past history of neurological disorders or trauma, including uncontrolledepilepsy and head injury.
5. Current or recent (within 12 months) participation in a clinical trial of a drug or amedical device.
6. Use of drugs (within 4 weeks) that affect the autonomic nervous system (beta blockers,beta stimulant, etc.).
7. Use of marijuana (including medical marijuana) for any indication
8. Any condition per the investigators' clinical judgment that precludes participation inthe study (e.g., pregnancy).
9. Lack of capacity to consent and without a legally authorized representative (LAR) whois a parent, spouse, or an adult child.
10. Living in a residential program (e.g., group home)
11. Wards of state