NCT04830163

Brain State-dependent PCMS in Chronic Stroke

Upregulating Corticospinal Function After Stroke Using Brain State-dependent Paired Corticomotoneuronal Stimulation

• Status: Not Yet Recruiting
• Phase: Phase 1 / Phase 2
• Study type: Interventional
• Enrollment: 45 (estimated)
• Sponsor: University of Texas at Austin · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

After stroke, people often have difficulty using their hands. Combined brain and nerve stimulation can strengthen the neural pathways that control hand function. In this study, we will deliver combined brain and nerve stimulation during specific time windows that increase activation of neural pathways underlying hand function. We will compare the effects of combined brain and nerve stimulation during these optimal time windows to the effects of combined brain and nerve stimulation applied during random time windows on post-stroke hand function.

Conditions

• Stroke

Interventions

Type	Name	Description
COMBINATION_PRODUCT	Brain state-dependent paired corticomotoneuronal stimulation (PCMS)	Paired corticomotoneuronal stimulation (PCMS) involves delivering precisely timed pairs of transcranial magnetic stimulation (TMS) and peripheral nerve stimulation (PNS) so that the neuronal activity evoked by such stimulation arrives synchronously at corticospinal-motoneuronal synapses. This synchronous arrival is postulated to cause long-term potentiation via spike timing-dependent plasticity, which then improves corticospinal transmission and hand function. In this study, paired corticomotoneuronal stimulation (PCMS) will be applied during specific brain states that reflect increased recruitment of motoneurons via the corticospinal tract. This increased recruitment is expected to enhance the beneficial effects of PCMS on human hand function after stroke.

Timeline

• Start date: 2026-01-01
• Primary completion: 2030-07-01
• Completion: 2031-07-01
• First posted: 2021-04-02
• Last updated: 2024-12-06

Locations

1 site across 1 country: United States