Repetitive Transcranial Magnetic Stimulation (rTMS) for the Treatment of

Status Completed

Clinical Trial Summary

The purpose of this research study is to attempt to treat apathy in Parkinson's disease (PD) using high-frequency repetitive transcranial magnetic stimulation (rTMS) of the brain and to investigate the patterns of brain activation that may be involved in apathy. It is hypothesized that high-frequency rTMS of the left mid-dorsolateral frontal cortex will improve apathy in PD.

Clinical Trial Description

Apathy is a syndrome characterized by a primary lack of motivation and it manifests in three domains: behavioral (lack of effort and productivity, dependence on others for structuring daily activities), cognitive (loss of interest in new experiences, lack of concern for one's problems) and affective (flattened affect and lack of response to positive or negative events). Apathy has been consistently attributed to functional disturbance of neural systems involving mesial frontal and the anterior cingulate cortex (ACC), an area with reciprocal connections with limbic, frontal cortices and the basal ganglia.

Repetitive transcranial magnetic stimulation (rTMS) is a noninvasive tool used to manipulate activity in specific brain neural circuits through the skull and, in turn, induce short-term (milliseconds) and long-term (minutes to hours) changes in behavior. The duration of effect depends on the stimulation mode. Several studies have now demonstrated that rTMS may facilitate or modulate behavior beyond the actual stimulation. rTMS of the mid-dorsolateral frontal cortex (MDLFC) has been used to treat depression presumably because of its modulatory effect on the fronto-cingulate system (MDLFC and the ACC circuitry). Studies have shown that rTMS of the left MDLFC modulates the blood flow response in the ACC. We therefore hypothesize that high-frequency rTMS of the left MDLFC will also improve apathy in PD. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00955032
Study type	Interventional
Source	University of Florida
Contact
Status	Completed
Phase	N/A
Start date	April 2007
Completion date	December 2009

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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.

Repetitive Transcranial Magnetic Stimulation (rTMS) for the Treatment of Apathy in Parkinson's Disease — ReStore

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms