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Clinical Trial Summary

The goal of this study is to learn about the effect of applying transcutaneous vagus nerve stimulation (tVNS) during motor training on motor learning in older adults. The main question it aims to answer is whether applying tVNS after successful motor trials (post-success tVNS) will facilitate the rate of motor learning. Participants will be randomly assigned to tVNS or sham group and receive tVNS or sham, respectively, at the outer ear during finger control training sessions. Finger control performance will be tested before and after the training sessions without outer ear stimulation.


Clinical Trial Description

The participants will be randomly assigned to a tVNS or control group. They will visit the lab for four sessions. The main motor task is to trace target trajectories with finger forces. As the pre- and post-tests, all participants will be tested on a force tracing motor task with the left hand. There will be no electrical stimulation during the tests. During the training sessions, all participants will wear surface electrodes on the outer ear. The attachment sites are the tragus or cymba concha (depending on the shape and size of the ear) for the tVNS group and the earlobe for the sham group. The participants will perform finger training to trace target trajectories with their left finger forces. Participants in the tVNS and sham group will receive tVNS and sham stimulation, respectively, after successful finger trials. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT06323954
Study type Interventional
Source Georgia Institute of Technology
Contact Minoru Shinohara, PhD
Phone 4048941030
Email shinohara@gatech.edu
Status Not yet recruiting
Phase N/A
Start date September 1, 2024
Completion date June 30, 2026

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