Cerebellar Stimulation & Cognitive Control

Status Recruiting

Clinical Trial Summary

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.

Clinical Trial Description

Our recent work found that patients with Parkinson's disease and schizophrenia have impaired frontal EEG rhythms in the theta and delta range (1-8 Hz).We have been using transcranial direct current stimulation to recover these rhythms as patients perform elementary cognitive tasks. We found that although we are able to modulate cerebellar and frontal activity with tDCS, this effect is minimal as the depth of the current is not great enough to modulate all cerebellar activity. Here we use transcranial magnetic stimulation (TMS) to modulate neural activity in the frontal cortex and recover cognitive function in patients with autism, schizophrenia, bipolar disorder and Parkinson's disease. The purpose of the study is to explore cerebellar stimulation as a potential new treatment to restore frontal activity and cognitive function in autism, schizophrenia, bipolar disorder and Parkinson's disease.Subjects will be brought in for 5 to 6 separate visits, with cerebellar or sham TMS stimulation twice per day for 5 days, as well as 3 follow-up visits.During these visits the patient will have cognitive, disease-specific and emotional testing, including EEG testing and MRI imaging. For those participants that received sham stimulation we will again use EEG to record how single pulses of magnetic or electrical stimulation influences other regions of the cerebellum and downstream brain regions. These data will provide insight into how the cerebellum may influence downstream brain regions and play a role in cognitive and motor performance. All data will be analyzed offline to determine if performance on the interval timing task and/or frontal brain rhythms change following transcranial magnetic stimulation as compared to the pre-stimulation blocks of trials. Additionally, we will analyze changes in their cognitive function, symptom ratings, functional and structural MRI, and mood following stimulation. Controls will receive both active and sham treatment for comparison. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03217110
Study type	Interventional
Source	University of Iowa
Contact	Krystal L Parker, Ph.D
Phone	319-353-4554
Email	CT201610712@gmail.com
Status	Recruiting
Phase	N/A
Start date	November 30, 2017
Completion date	August 1, 2024

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Cerebellar Stimulation and Cognitive Control

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms