Ignite Creation Date:
2025-12-25 @ 12:39 AM
Ignite Modification Date:
2025-12-25 @ 10:49 PM
Study NCT ID:
NCT01250067
Status:
COMPLETED
Last Update Posted:
2010-11-30
First Post:
2010-11-26
Is NOT Gene Therapy:
False
Has Adverse Events:
False
Brief Title:
Motor-related Cortical Potential in Patients With Essential Tremor
Sponsor:
China Medical University Hospital
Organization:
Study Overview
Official Title:
None
Status:
COMPLETED
Status Verified Date:
2005-09
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:
In this proposal, in addition to the conventional MRCP recording, the dipoles and sources of the different subcomponents of MRCP will also be analyzed with the brain electric source analysis (BESA) to evaluate the difference in the solutions and source strength underlying the MRCP between normal controls and patients with ET.
Detailed Description:
Essential tremor (ET) is a common disorder with unknown etiology and pathogenesis. Typically described as a postural tremor, ET often has a marked kinetic component suggesting cerebellar involvement in the pathogenesis of the tremor. The assumption has been illustrated by both positron emission tomography and functional magnetic resonance imaging studies, which revealed that blood flow and activity of the cerebellum were increased in ET patients as compared to the normal controls. In contrast to the cumulative body of imaging evidence, the physiological bases to link the ET and cerebellar functional alternation are scarce. Studies with tandem gait analysis have revealed 25% abnormality of ET patients and surface electromyographic study has found a delay in the second agonist burst during rapid wrist movements suggesting the possible role of cerebellar functional alternation in the generation of ET. In addition, since the tremor of ET tends to appear in the movement ignition or during postural maintenance, it is conceivable that this sort of tremor might exert certain impact on the programming and preparation of the limb movement. Thus it would be appropriate to adopt a tool, which can concomitantly assess the cerebellar function and movement preparation, to investigate the patients with ET. In this proposal, we will record movement-related cortical potentials (MRCP) in ET patients. MRCP is a slow negative shift starting 1-1.5 sec before volitional movement. It consists of at least 3 subcomponents, the Bereitschaftspotential, the negative slope, and the motor potential. The generators crucial for the generation of MRCP include cerebellum, motor and motor association cortex. Thus MRCP seems to be an appropriate tool to assess the patients with ET, in whom the trivial cerebellar functional alternation could be responsible for the tremor generation and motor preparation might be hampered concomitantly. In this proposal, in addition to the conventional MRCP recording, the dipoles and sources of the different subcomponents of MRCP will also be analyzed with the brain electric source analysis (BESA) to evaluate the difference in the solutions and source strength underlying the MRCP between normal controls and patients with ET.
Study Oversight
Has Oversight DMC:
Is a FDA Regulated Drug?:
Is a FDA Regulated Device?:
Is an Unapproved Device?:
Is a PPSD?:
Is a US Export?:
Is an FDA AA801 Violation?: