Ignite Creation Date:
2024-05-05 @ 11:26 AM
Last Modification Date:
2024-10-26 @ 9:07 AM
Study NCT ID:
NCT00046215
Status:
COMPLETED
Last Update Posted:
2008-03-04
First Post:
2002-09-21
Brief Title:
Transcranial Magnetic Stimulation to Study Imagination of Movement
Sponsor:
National Institute of Neurological Disorders and Stroke NINDS
Organization:
National Institutes of Health Clinical Center CC
Study Overview
Official Title:
Effect of Transcranial Magnetic Stimulation to Dorsal Premotor Cortex on Motor Imagination
Status:
COMPLETED
Status Verified Date:
2003-11
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
This study will use transcranial magnetic stimulation TMS to examine the relationship between cognitive processing and motor control by determining whether a part of the brain called the premotor cortex is essential to imagining movement TMS described below is a method of brain stimulation that can temporarily inhibit brain functions of the area underlying the stimulator
Healthy right-handed normal volunteers may be eligible for this study Candidates will be screened with a medical history neurological examination and test of finger dexterity
Participants will perform a sequential finger tapping movement in response to a series of numbers stimuli displayed on a computer monitor After 10 stimuli they will be asked which finger they tapped last They will then imagine the same finger tapping movement and will be asked which finger they tapped last in their imagination During these exercises participants will undergo transcranial magnetic stimulation For this procedure the subject is seated comfortably in a chair A wire coil is placed on the scalp and a brief electrical current is passed through the coil creating a magnetic pulse that passes into the brain This generates a very small electrical current in the brain which briefly disrupts the function of the brain cells in the stimulated area The stimulation may cause twitching in arm or leg muscles During the stimulation the electrical activity of muscles is recorded with a computer or other recording device using electrodes attached to the skin with tape
Subjects will complete eight experimental blocks of testing One block consists of 20 experimental trials with each trial lasting about 10 seconds Five pairs of TMS stimuli are given per trial with pulses delivered in short bursts of one second each After each block subjects draw a mark on a line on paper showing how much attention they are paying how much fatigue they are experiencing and how well they think they are executing the tasks Each TMS session takes up to 35 hours
Before the TMS session participants will undergo magnetic resonance imaging MRI for use in determining proper placement of the TMS coil MRI uses a strong magnetic field and radio waves to obtain images of body organs and tissues For this procedure the subject lies still in a narrow metal cylinder the scanner for about 30 minutes during the scan
Healthy right-handed normal volunteers may be eligible for this study Candidates will be screened with a medical history neurological examination and test of finger dexterity
Participants will perform a sequential finger tapping movement in response to a series of numbers stimuli displayed on a computer monitor After 10 stimuli they will be asked which finger they tapped last They will then imagine the same finger tapping movement and will be asked which finger they tapped last in their imagination During these exercises participants will undergo transcranial magnetic stimulation For this procedure the subject is seated comfortably in a chair A wire coil is placed on the scalp and a brief electrical current is passed through the coil creating a magnetic pulse that passes into the brain This generates a very small electrical current in the brain which briefly disrupts the function of the brain cells in the stimulated area The stimulation may cause twitching in arm or leg muscles During the stimulation the electrical activity of muscles is recorded with a computer or other recording device using electrodes attached to the skin with tape
Subjects will complete eight experimental blocks of testing One block consists of 20 experimental trials with each trial lasting about 10 seconds Five pairs of TMS stimuli are given per trial with pulses delivered in short bursts of one second each After each block subjects draw a mark on a line on paper showing how much attention they are paying how much fatigue they are experiencing and how well they think they are executing the tasks Each TMS session takes up to 35 hours
Before the TMS session participants will undergo magnetic resonance imaging MRI for use in determining proper placement of the TMS coil MRI uses a strong magnetic field and radio waves to obtain images of body organs and tissues For this procedure the subject lies still in a narrow metal cylinder the scanner for about 30 minutes during the scan
Detailed Description:
A high-level of motor control often requires complex processing of sensory information which likely corresponds to the neural correlates for mental imagery of movement Such cognitive aspects of motor control may underlie other cognitive functions such as mental calculation The present transcranial magnetic stimulation TMS study is aimed to characterize the relation between cognitive processing and motor control Based on our previous results from neuroimaging experiments we hypothesize that the ability to process information for motor imagery would primarily be associated with the dorsal lateral premotor context PMd as well as the posterior parietal cortex TMS will be used to disrupt neural processes in the limited brain structures under the coil for a short period of time virtual lesion study For this proposal 15 healthy subjects will perform number-guided motor executionimagery tasks Both tasks will be guided by 10 visual number stimuli presented at a rate of 10 Hz For the test TMS stimuli a paired TMS stimulation will be delivered to either M1 or PMd100 to 150 milliseconds after 5 of the visual number stimuli The frequency of TMS stimulation will be 10 Hz on average for a short period of time 10 seconds Measurement will be accuracy of the task performance under the TMS stimulation as compared with a sham condition We expect that the TMS stimulation to PMd will interfere with the performance of motor imagery more than the performance of motor execution The present study will clarify the neural correlates underlying the ability of imagining movement which is now drawing growing attention in the neuroscience community
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None
Secondary IDs
| Secondary ID | Type | Domain | Link |
|---|---|---|---|
| 02-N-0312 | None | None | None |