The purpose of this study was to investigate whether the frequency content of noisy galvanic vestibular stimulation influences vestibular perceptual sensitivity, tracking accuracy, and manual control performance. Healthy adult participants completed a randomized crossover protocol in which they received no stimulation, low-frequency nGVS, and high-frequency nGVS during separate experimental conditions within a single study session. Outcome measures included vestibular perceptual thresholds, tracking error rate, and measures of manual control performance. The results were intended to improve understanding of vestibular neuromodulation and inform optimization of nGVS parameters for future aerospace and clinical applications.
