Stroke Clinical Trial - tVNS Responsiveness Testing With Pupil Size

Status Not yet recruiting

Clinical Trial Summary

The goal of this study is to learn about the acute pupil response to transcutaneous vagus nerve stimulation (tVNS) in stroke survivors and healthy adults. The main question it aims to answer is whether pupil size response is greater with bilateral tVNS compared to unilateral tVNS. Participants will receive tVNS and sham at the outer ear unilaterally and bilaterally in resting condition. The pupil size of the participants will be recorded during tVNS.

Clinical Trial Description

Participants will wear surface electrodes on the outer ear on both sides and a finger device that monitors heart rate. The attachment sites are the tragus or the cymba concha (depending on the shape and size of the ear) for tVNS and the ear lobe for sham. The electrical current will have a pulse duration of 0.1 ms at 30 Hz with an intensity below the pain threshold or 5 milliamp, whichever is lower, for a duration of 0.5 s. The experimental stimulation intensity will be determined as just below the pain threshold. Participants will receive multiple blocks of unilateral and bilateral stimulations to the sham or tVNS electrodes at rest, during which their pupil size will be recorded. The order of unilateral/bilateral and sham/tVNS stimulation will be randomized. ;

Study Design

Related Conditions & MeSH terms

Stroke

Clinical Trial Details

NCT number	NCT06335199
Study type	Interventional
Source	Georgia Institute of Technology
Contact	Minoru Shinohara, Ph.D.
Phone	404-894-1030
Email	shinohara@gatech.edu
Status	Not yet recruiting
Phase	N/A
Start date	May 1, 2024
Completion date	April 30, 2025

View Details

See also
Status	Clinical Trial	Phase
Recruiting	`NCT04043052` - Mobile Technologies and Post-stroke Depression	N/A
Completed	`NCT04034069` - Effects of Priming Intermittent Theta Burst Stimulation on Upper Limb Motor Recovery After Stroke: A Randomized Controlled Trial	N/A
Suspended	`NCT03869138` - Alternative Therapies for Improving Physical Function in Individuals With Stroke	N/A
Completed	`NCT04101695` - Hemodynamic Response of Anodal Transcranial Direct Current Stimulation Over the Cerebellar Hemisphere in Healthy Subjects	N/A
Terminated	`NCT03052712` - Validation and Standardization of a Battery Evaluation of the Socio-emotional Functions in Various Neurological Pathologies	N/A
Completed	`NCT00391378` - Cerebral Lesions and Outcome After Cardiac Surgery (CLOCS)	N/A
Recruiting	`NCT06204744` - Home-based Arm and Hand Exercise Program for Stroke: A Multisite Trial	N/A
Active, not recruiting	`NCT06043167` - Clinimetric Application of FOUR Scale as in Treatment and Rehabilitation of Patients With Acute Cerebral Injury
Enrolling by invitation	`NCT04535479` - Dry Needling for Spasticity in Stroke	N/A
Completed	`NCT03985761` - Utilizing Gaming Mechanics to Optimize Telerehabilitation Adherence in Persons With Stroke	N/A
Recruiting	`NCT00859885` - International PFO Consortium	N/A
Recruiting	`NCT06034119` - Effects of Voluntary Adjustments During Walking in Participants Post-stroke	N/A
Completed	`NCT03622411` - Tablet-based Aphasia Therapy in the Chronic Phase	N/A
Completed	`NCT01662960` - Visual Feedback Therapy for Treating Individuals With Hemiparesis Following Stroke	N/A
Recruiting	`NCT05854485` - Robot-Aided Assessment and Rehabilitation of Upper Extremity Function After Stroke	N/A
Active, not recruiting	`NCT05520528` - Impact of Group Participation on Adults With Aphasia	N/A
Active, not recruiting	`NCT03366129` - Blood-Brain Barrier Disruption in People With White Matter Hyperintensities Who Have Had a Stroke
Completed	`NCT03281590` - Stroke and Cerebrovascular Diseases Registry
Completed	`NCT05805748` - Serious Game Therapy in Neglect Patients	N/A
Recruiting	`NCT05993221` - Deconstructing Post Stroke Hemiparesis