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EEG and EMG Analysis of Ideomotor Apraxia

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00024999
Recruitment Status : Completed
First Posted : October 11, 2001
Last Update Posted : March 4, 2008
Information provided by:
National Institutes of Health Clinical Center (CC)

Tracking Information
First Submitted Date October 10, 2001
First Posted Date October 11, 2001
Last Update Posted Date March 4, 2008
Study Start Date October 2001
Primary Completion Date Not Provided
Current Primary Outcome Measures Not Provided
Original Primary Outcome Measures Not Provided
Change History Complete list of historical versions of study NCT00024999 on Archive Site
Current Secondary Outcome Measures Not Provided
Original Secondary Outcome Measures Not Provided
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
Descriptive Information
Brief Title EEG and EMG Analysis of Ideomotor Apraxia
Official Title EEG Analysis of Ideomotor Apraxia
Brief Summary

This study will examine how the brain operates during execution and control of voluntary movement and what goes wrong with these processes in disease. It will use electroencephalography (EEG) and electromyography (EMG) to compare brain function in normal subjects and in patients with-a disorder affecting patients with stroke and other brain lesions. These patients have problems with timing, sequence and spatial organization of certain types of movements.

EEG measures the electrical activity of the brain. The activity is recorded using wire electrodes attached to the scalp or mounted on a Lycra cap placed on the head. EMG measures electrical activity from muscles. It uses wire electrodes placed on the skin over the muscles.

Adult healthy normal volunteers and patients with ideomotor apraxia with a single left brain lesion may be eligible for this study.

Study participants will be asked to make certain movements with their arms or hands, such as waving and using scissors. Brain and muscle activity will be measured during these tasks with EEG and EMG recordings. Patients may be asked to repeat these tests over time as their condition changes (such as during recovery from a stroke) to gain information about the recovery process.

Detailed Description

Ideomotor apraxia is a disorder affecting patients with stroke and a variety of other brain lesions. The disorder involves problematic timing, sequence, and spatial organization of gestured movements. As a result, patients suffer from incorrect temporal and spatial components to movements as evidenced during pantomime of transitive and intransitive movements. The errors can be seen in left and right hemisphere damaged patients during intransitive movements, but lesions predominate in the left hemisphere for inability to pantomime transitive movements. Thus far, damage to parietofrontal circuits has been implicated in significantly contributing to this disorder. These circuits, which pave the way for sensorimotor processing, are of clear interest in the nature of praxis.

In the present study, we plan to evaluate further the parietofrontal circuits in these patients. Using EEG, we will analyze the movement related cortical potentials (MRCP) in these patients compared to controls to evaluate any cortical planning differences. We will analyze how the circuits play a role in transitive and intransitive movements in normal subjects and patients with Ideomotor apraxia. Each patient will make a series of movement during 64 channel EEG and EMG recordings. Following recordings, analysis will be made of the event related desynchronization (ERD) and the MRCP. Further analysis will look at the activation of the parietofrontal circuitry in patients using correlation and coherence methods. For the same purposes, MEG studies will be performed to assess similar measures.

Study Type Observational
Study Design Not Provided
Target Follow-Up Duration Not Provided
Biospecimen Not Provided
Sampling Method Not Provided
Study Population Not Provided
Condition Ideomotor Apraxia
Intervention Not Provided
Study Groups/Cohorts Not Provided
Publications * Bannur U, Rajshekhar V. Post operative supplementary motor area syndrome: clinical features and outcome. Br J Neurosurg. 2000 Jun;14(3):204-10.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Recruitment Information
Recruitment Status Completed
 (submitted: June¬†23,¬†2005)
Original Enrollment Same as current
Study Completion Date September 2005
Primary Completion Date Not Provided
Eligibility Criteria

We will study normal volunteers and patient groups between the ages of 18-80 years of age within the following parameters:


Normal subjects.

Patients diagnosed with Ideomotor apraxia with a single left hemisphere lesion.

Patients with Ideomotor apraxia with corticobasal ganglionic degeneration.


Normal subjects: abnormal neurologic examination or history of neurologic disorders.

Ideomotor apraxic patients: a second neurologic disorder including more than one brain lesion or the inability to cooperate fully.

Normal and Ideomotor apraxic patients: cognitively impaired subjects will not be accrued (for the purposes of this study, patients that can provide full informed consent for the study are not considered cognitively impaired).

For MRI studies, patients with metallic implants to remove potential risks from this procedure.

For MRI purposes, women who are pregnant are excluded from this part of the protocol. Therefore, all women of childbearing potential will have a pregnancy test performed, which must be negative, before proceeding.

Sexes Eligible for Study: All
Ages Child, Adult, Older Adult
Accepts Healthy Volunteers No
Contacts Contact information is only displayed when the study is recruiting subjects
Listed Location Countries United States
Removed Location Countries  
Administrative Information
NCT Number NCT00024999
Other Study ID Numbers 020011
Has Data Monitoring Committee Not Provided
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement Not Provided
Responsible Party Not Provided
Study Sponsor National Institute of Neurological Disorders and Stroke (NINDS)
Collaborators Not Provided
Investigators Not Provided
PRS Account National Institutes of Health Clinical Center (CC)
Verification Date September 2005