Normal force in natural active touch correlates with fingertip stiffness

Key Points

• Normal force during active touch shows a direct correlation with fingertip stiffness, enhancing tactile feedback sensitivity.
• Participants exhibited varying fingertip stiffness levels, impacting how normal force is perceived and applied during touch tasks.
• Analysis focused on the mechanical properties of the fingertips and their role in modulating tactile responses through normal force.
• Findings highlight the importance of fingertip stiffness in improving our understanding of touch sensitivity and mechanoreceptor function.