💬In plain words
What the trial is, and whether it could suit you
Background:
When people have a stroke, they often have difficulty moving their arms and hands. Transcranial magnetic stimulation (TMS) can improve how well people with and without stroke can move their arms and hands. But the effects of TMS are minor, and it doesn t work for everyone. Researchers want to study how to time brain stimulation so that the effects are more consistent.
Objective:
To understand how the brain responds to transcranial magnetic stimulation so that treatments for people with stroke can be improved.
Eligibility:
Adults ages 18 and older who had a stroke at least 6 months ago
Healthy volunteers ages 50 and older
Design:
Participants will have up to 5 visits.
At visit 1, participants will be screened with medical history and physical exam. Participants with stroke will also have TMS and surface electromyography (sEMG).
For TMS, a brief electrical current wil
Sign in to get the eligibility rules as simple questions to take to your doctor.
📋 Eligibility rules (as published)
* INCLUSION CRITERIA:
* Healthy younger adults:
* Ages 18 years to less than 50 years. (18 to 49)
* Willingness/ability to provide informed consent.
* Ability to induce a motor evoked potential in the muscle target of the upper extremity, as evaluated during the TMS Screening.
* Healthy older adults:
* Age 50 and over
* Willingness/ability to provide informed consent.
* Ability to induce a motor evoked potential in the muscle target of the upper extremity, as evaluated during the TMS Screening.
* Stroke patients:
* Age 18 and over.
* Unilateral or bilateral upper limb paresis with the ability to voluntarily contract a finger, hand, wrist, or elbow muscle in the affected arm(s).
* Stroke onset \> 6 months prior to participation.
* Intact M1 sufficient to induce motor evoked potentials in the affected upper extremity following ipsilesional TMS, as evaluated during the TMS Screening.
* Willingness/ability to provide informed consent.
* If the investigator feels the individual s capacity to provide informed consent is questionable, the NIH Human Subjects Protection Unit (HSPU) will be requested to determine the individual s ability to consent.
EXCLUSION CRITERIA:
* Healthy younger and older adults:
* Presence of severe neurological or medical disorder (e.g., Parkinson s disease or multiple sclerosis).
* History of seizures.
* Chronic use of antipsychotic drugs (e.g., chlorpromazine or clozapine), tri-cyclic or other anti-depressants, benzodiazepines, or prescription stimulants.
* TMS contraindications, such as:
* Pacemaker, implanted pump, stimulator, cochlear implant, or metal objects inside the eye or skull.
* Diagnosed severe hearing loss.
* Current pregnancy.
* Staff from our section.
* Stroke patients:
* Presence of severe neurological or medical disorder, other than stroke (e.g., Parkinson s disease or multiple sclerosis).
* History of brainstem stroke.
* History of seizures.
* Chronic use of antipsychotic drugs (e.g., chlorpromazine or clozapine), benzodiazepines, or prescription stimulants.
* TMS contraindications, such as:
* Pacemaker, implanted pump, stimulator, cochlear implant, or metal objects inside
the eye or skull.
---Diagnosed severe hearing loss.
* Current pregnancy.
* Staff from our section.
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