Sub-Threshold Stochastic Vibration Improves Fingertip Tactile Sensitivity in Stroke Survivors and Healthy Adults, with Source-Localized EEG Evidence for Cortical Network Reorganization in Healthy Adults

Cutaneous sensation is vital for daily function and safety, yet it commonly declines with ageing and after neurological injury, with stroke survivors particularly affected. This study investigates whether sub-threshold stochastic (random) vibrations can enhance light-touch (cutaneous) sensation in healthy adults and stroke survivors and characterizes the associated changes in cortical functional connectivity (FC). Nineteen healthy participants and five stroke survivors took part. A custom device delivered sinusoidal and stochastic vibrations to the volar surface of the right middle fingertip.

This content is for informational purposes only and is not medical advice. It is not intended to diagnose, treat, cure, or prevent any disease. Consult a healthcare professional before starting any supplement, treatment, or program: especially if you are pregnant, nursing, taking medication, or managing a health condition.