Published September 21, 2026, in the Journal of Neural Engineering, this study compared two ways of conveying position from a supernumerary robotic thumb. Forty-two adults were assigned to continuous sliding-pressure or discrete vibrotactile feedback.
What the feedback added Without visual input, participants judged the start and end of passive thumb movements. Both explicit feedback approaches outperformed implicit feedback, and continuous pressure produced more accurate judgments than vibration.
What EEG contributed Vibrotactile feedback produced more sustained sensorimotor alpha and beta desynchronization. Pressure feedback showed higher beta-band network small-worldness. The authors interpret this pattern as more efficient integration, but EEG differences alone do not prove lower effort or real-world benefit.
Why it matters The result offers a useful design clue for augmentation and assistive interfaces. It was a laboratory task, not a rehabilitation trial, and the abstract did not report long-term use, effect sizes, adverse events or disclosures.
Source and disclosure Authoritative abstract checked. Funding and conflicts were unavailable. Prepared with AI assistance and source-checked September 25, 2026.