Motor Learning, Transcranial Magnetic Stimulation
Conditions
Keywords
Transcranial magnetic stimulation, Motor learning, Somatosensory cortex, Motor function
Brief summary
The purpose of this study is to compare the effectiveness of different repetitive Transcranial Magnetic Stimulation protocols for enhancing motor learning in healthy peolple.
Detailed description
This randomized clinical trial aims to compare the effectiveness of different repetitive Transcranial Magnetic Stimulation (rTMS) protocols in enhancing motor learning in healthy individuals. It focuses on two key brain areas: the primary motor cortex (M1) and the primary somatosensory cortex (S1), recognized for their roles in motor skill acquisition and execution. Motor learning involves two distinct neural networks: the associative/premotor and sensorimotor networks. Studies suggest that the associative/premotor network predominates initially, followed by the sensorimotor network. M1 stores movement patterns, whereas S1 appears crucial for initial motor learning and movement adaptation. rTMS, a non-invasive technique modulating neuronal excitability, has been used to improve motor function in patients with brain injuries. However, its effectiveness in healthy individuals has been variable, especially when stimulating M1 and S1. Prior research suggests that inhibitory rTMS in S1 may influence motor learning, but findings regarding its excitatory effect and comparison with M1 stimulation are mixed. The primary hypothesis posits that excitatory rTMS in S1 will yield superior motor learning improvements compared to M1 stimulation in healthy individuals. The secondary hypothesis predicts improvements independent of the stimulated area. The study will involve healthy participants, utilizing tests for accuracy and time. Methodology includes randomization, blind evaluation, and rTMS application based on assigned groups. With a sample size of 35 subjects per group, data will be analyzed using parametric and non-parametric statistical tests to compare the effects of rTMS on M1 and S1 concerning motor learning in healthy subjects. Results will be considered significant with p \< 0.05, and effect size will be evaluated. This trial aims to provide clarity on the effectiveness of excitatory rTMS in specific brain areas to enhance motor learning in individuals without neurological pathologies, potentially impacting rehabilitation and motor performance.
Interventions
DEVICErepetitive Transcranial Magnetic Stimulation over primary somatosensory cortex
It will be applyed a magnetic field over the Somatosensory cortex of the patient that pretends to hiperexcite the membrans of the neurons inthis area to enhance motor learning
DEVICErepetitive Transcranial Magnetic Stimulation over primary motor cortex
It will be applyed a magnetic field over the primary motor cortex of the patient that pretends to hiperexcite the membrans of the neurons inthis area to enhance motor learning
DEVICEsham repetitive Transcranial Magnetic Stimulation
It will be applied a sham stimulation with the same protocol that pretends to create the illusion of being stimulated
Sponsors
Neuron, Spain
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* Older than 18 years old and younger than 65
Exclusion criteria
* Presenting any neurological pathology * Pain during the study * Any contraindications to rTMS, such as metal implants, history of epileptic seizures or taking medication that lowers the seizure threshold
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in accuracy | Change from Baseline to 5 days and 10 days in accuracy | Accuracy in associating one letter of the keyboard with a letter from the Phoenician alphabet presented in the screen. It will be measured by using the software PsychoPy, that has been used in other studies for measuring motor learning in an indirect way. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in reaction time speed | Change from Baseline to 5 days and 10 days in reaction time speed | Reaction time for responding correctly the association between one letter of the keyboard and a letter from the Phoenician alphabet presented in the screen. It will be measured by using the software PsychoPy, that has been used in other studies for measuring motor learning in an indirect way. |
| Change in pegs placed in 30 seconds | Change from Baseline to 5 days and 10 days in days placed in 30 seconds | Number of pegs placed in a pegboard in 30 seconds will be measured. Patients will use just right hand first, after they will use just their left hand and finally with both hand at same time. This procedure will be repeated and average pegs placed in each condition will be noted. Purdue Pegboard Test will be used for measuring. |
Countries
Spain
Outcome results
None listed