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Cerebellar Stimulation and Cognitive Control

Cerebellar Transcranial Magnetic Stimulation and Cognitive Control

Who can join

Ages 18 to 90 · All sexes · Healthy volunteers welcome

Inclusion Criteria:

* A clinical diagnosis consistent with enrollment

Exclusion Criteria:

* History of recurrent seizures or epilepsy
* Any other neurological or psychiatric diagnosis outside the diagnosis for which the participant is enrolled.
* Active substance use disorder in the past 6 months other than tobacco use disorder.
* Inability to consent for study.
* Pacemaker
* Coronary Stent
* Defibrillator
* Neurostimulation
* Claustrophobia
* Uncontrolled high blood pressure
* Atrial fibrillation
* Significant heart disease
* Hemodynamic instability
* Kidney disease
* Pregnant, trying to become pregnant, or breast feeding

About the study

The purpose of this study is to examine whether cerebellar stimulation can be used to improve cognitive deficits and mood in patients with schizophrenia, autism, bipolar disorder, Parkinson's disease, and major depression.

What is being tested

• Repetitive Transcranial Magnetic Stimulation (rTMS) (device)
• Sham Repetitive Transcranial Magnetic Stimulation (rTMS) (device)

Sponsor: Krystal Parker, PhD · Participants: 200 · Started: Nov 30, 2017

Contact the study team

• Krystal L Parker, Ph.D · Phone: 319-353-4554
• Benjamin Pace, M.S. · Phone: 319-384-9302

Official record on ClinicalTrials.gov — NCT03217110

Locations in the U.S.

Conditions

• Schizophrenia
• Autism Spectrum Disorder
• Bipolar Disorder
• Depression
• Parkinson's Disease

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.